20111020102212 has 72 divisors (see below), whose sum is σ = 50815732718016. Its totient is φ = 6187679581824.

The previous prime is 20111020102139. The next prime is 20111020102223. The reversal of 20111020102212 is 21220102011102.

It is a junction number, because it is equal to n+sod(n) for n = 20111020102191 and 20111020102200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39673378 + ... + 40177094.

It is an arithmetic number, because the mean of its divisors is an integer number (705774065528).

Almost surely, 2^{20111020102212} is an apocalyptic number.

It is an amenable number.

20111020102212 is an abundant number, since it is smaller than the sum of its proper divisors (30704712615804).

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

20111020102212 is a wasteful number, since it uses less digits than its factorization.

20111020102212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523437 (or 523422 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20111020102212 its reverse (21220102011102), we get a palindrome (41331122113314).

The spelling of 20111020102212 in words is "twenty trillion, one hundred eleven billion, twenty million, one hundred two thousand, two hundred twelve".