20111611102 has 48 divisors (see below), whose sum is σ = 34659757440. Its totient is φ = 8729317520.

The previous prime is 20111611043. The next prime is 20111611111.

20111611102 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×20111611102² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3665253 + ... + 3670735.

It is an arithmetic number, because the mean of its divisors is an integer number (722078280).

Almost surely, 2^20111611102 is an apocalyptic number.

20111611102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20111611102 is a deficient number, since it is larger than the sum of its proper divisors (14548146338).

20111611102 is a wasteful number, since it uses less digits than its factorization.

20111611102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6189 (or 6178 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

The spelling of 20111611102 in words is "twenty billion, one hundred eleven million, six hundred eleven thousand, one hundred two".