20101110102 has 24 divisors (see below), whose sum is σ = 44729498736. Its totient is φ = 6519278736.

The previous prime is 20101110101. The next prime is 20101110109.

It is a happy number.

20101110102 is nontrivially palindromic in base 10.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101110101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15090258 + ... + 15091589.

It is an arithmetic number, because the mean of its divisors is an integer number (1863729114).

Almost surely, 2^20101110102 is an apocalyptic number.

20101110102 is an abundant number, since it is smaller than the sum of its proper divisors (24628388634).

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

20101110102 is a wasteful number, since it uses less digits than its factorization.

20101110102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30181892 (or 30181889 counting only the distinct ones).

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

The spelling of 20101110102 in words is "twenty billion, one hundred one million, one hundred ten thousand, one hundred two".