1011102120 has 96 divisors (see below), whose sum is σ = 3755531520. Its totient is φ = 231108480.

The previous prime is 1011102109. The next prime is 1011102121. The reversal of 1011102120 is 212011101.

It is a happy number.

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

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

It is not an unprimeable number, because it can be changed into a prime (1011102121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 198096 + ... + 203135.

It is an arithmetic number, because the mean of its divisors is an integer number (39120120).

Almost surely, 2^1011102120 is an apocalyptic number.

1011102120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011102120 is an abundant number, since it is smaller than the sum of its proper divisors (2744429400).

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

1011102120 is a wasteful number, since it uses less digits than its factorization.

1011102120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401255 (or 401248 counting only the distinct ones).

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

The square root of 1011102120 is about 31797.8320015689. The cubic root of 1011102120 is about 1003.6870952867.

Adding to 1011102120 its reverse (212011101), we get a palindrome (1223113221).

The spelling of 1011102120 in words is "one billion, eleven million, one hundred two thousand, one hundred twenty".