1201101102 has 128 divisors (see below), whose sum is σ = 2916777600. Its totient is φ = 364953600.

The previous prime is 1201101089. The next prime is 1201101127. The reversal of 1201101102 is 2011011021.

It is a happy number.

It is a super-2 number, since 2×1201101102² = 2885287714451228808, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4983702 + ... + 4983942.

It is an arithmetic number, because the mean of its divisors is an integer number (22787325).

Almost surely, 2^1201101102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201101102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1458388800).

1201101102 is an abundant number, since it is smaller than the sum of its proper divisors (1715676498).

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

1201101102 is a wasteful number, since it uses less digits than its factorization.

1201101102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419 (or 413 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1201101102 is about 34656.9055456485. The cubic root of 1201101102 is about 1062.9834963412.

Adding to 1201101102 its reverse (2011011021), we get a palindrome (3212112123).

The spelling of 1201101102 in words is "one billion, two hundred one million, one hundred one thousand, one hundred two".