1201101000 has 256 divisors, whose sum is σ = 4330609920. Its totient is φ = 273920000.

The previous prime is 1201100981. The next prime is 1201101007. The reversal of 1201101000 is 1011021.

It is a super-2 number, since 2×1201101000² = 2885287224402000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1201101000.

It is not an unprimeable number, because it can be changed into a prime (1201101007) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 559930 + ... + 562070.

It is an arithmetic number, because the mean of its divisors is an integer number (16916445).

Almost surely, 2^1201101000 is an apocalyptic number.

1201101000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201101000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2165304960).

1201101000 is an abundant number, since it is smaller than the sum of its proper divisors (3129508920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1201101000 is a wasteful number, since it uses less digits than its factorization.

1201101000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193 (or 2179 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 1201101000 is about 34656.9040740802. The cubic root of 1201101000 is about 1062.9834662509.

Adding to 1201101000 its reverse (1011021), we get a palindrome (1202112021).

It can be divided in two parts, 1201 and 101000, that added together give a palindrome (102201).

The spelling of 1201101000 in words is "one billion, two hundred one million, one hundred one thousand".