20111102122212 has 48 divisors (see below), whose sum is σ = 54406846327680. Its totient is φ = 6412235458464.

The previous prime is 20111102122201. The next prime is 20111102122231. The reversal of 20111102122212 is 21222120111102.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 4048125963 + ... + 4048130930.

It is an arithmetic number, because the mean of its divisors is an integer number (1133475965160).

Almost surely, 2^{20111102122212} is an apocalyptic number.

It is an amenable number.

20111102122212 is an abundant number, since it is smaller than the sum of its proper divisors (34295744205468).

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

20111102122212 is a wasteful number, since it uses less digits than its factorization.

20111102122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8096256929 (or 8096256921 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 20111102122212 its reverse (21222120111102), we get a palindrome (41333222233314).

The spelling of 20111102122212 in words is "twenty trillion, one hundred eleven billion, one hundred two million, one hundred twenty-two thousand, two hundred twelve".