20102111201212 has 24 divisors (see below), whose sum is σ = 36040468175712. Its totient is φ = 9806930078400.

The previous prime is 20102111201203. The next prime is 20102111201231. The reversal of 20102111201212 is 21210211120102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261898864 + ... + 261975607.

It is an arithmetic number, because the mean of its divisors is an integer number (1501686173988).

Almost surely, 2^{20102111201212} is an apocalyptic number.

It is an amenable number.

20102111201212 is a deficient number, since it is larger than the sum of its proper divisors (15938356974500).

20102111201212 is a wasteful number, since it uses less digits than its factorization.

20102111201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523874709 (or 523874707 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20102111201212 its reverse (21210211120102), we get a palindrome (41312322321314).

The spelling of 20102111201212 in words is "twenty trillion, one hundred two billion, one hundred eleven million, two hundred one thousand, two hundred twelve".