1201220010 has 64 divisors (see below), whose sum is σ = 3220162560. Its totient is φ = 318634560.

The previous prime is 1201219951. The next prime is 1201220021. The reversal of 1201220010 is 100221021.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1201219974 and 1201220001.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39924 + ... + 63216.

It is an arithmetic number, because the mean of its divisors is an integer number (50315040).

Almost surely, 2^1201220010 is an apocalyptic number.

1201220010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201220010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1610081280).

1201220010 is an abundant number, since it is smaller than the sum of its proper divisors (2018942550).

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

1201220010 is a wasteful number, since it uses less digits than its factorization.

1201220010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23500 (or 23494 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1201220010 is about 34658.6210054584. The cubic root of 1201220010 is about 1063.0185733414.

Adding to 1201220010 its reverse (100221021), we get a palindrome (1301441031).

The spelling of 1201220010 in words is "one billion, two hundred one million, two hundred twenty thousand, ten".