20102211121110 has 32 divisors (see below), whose sum is σ = 48330999993600. Its totient is φ = 5351068154208.

The previous prime is 20102211121093. The next prime is 20102211121151. The reversal of 20102211121110 is 1112111220102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20102211121110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 595075210 + ... + 595108989.

It is an arithmetic number, because the mean of its divisors is an integer number (1510343749800).

Almost surely, 2^{20102211121110} is an apocalyptic number.

20102211121110 is an abundant number, since it is smaller than the sum of its proper divisors (28228788872490).

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

20102211121110 is a wasteful number, since it uses less digits than its factorization.

20102211121110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190184772.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20102211121110 its reverse (1112111220102), we get a palindrome (21214322341212).

The spelling of 20102211121110 in words is "twenty trillion, one hundred two billion, two hundred eleven million, one hundred twenty-one thousand, one hundred ten".