20102211111012 has 48 divisors (see below), whose sum is σ = 47122059210240. Its totient is φ = 6669759702528.

The previous prime is 20102211111011. The next prime is 20102211111049. The reversal of 20102211111012 is 21011111220102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20102211110982 and 20102211111000.

It is not an unprimeable number, because it can be changed into a prime (20102211111011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18825228 + ... + 19864380.

It is an arithmetic number, because the mean of its divisors is an integer number (981709566880).

Almost surely, 2^{20102211111012} is an apocalyptic number.

It is an amenable number.

20102211111012 is an abundant number, since it is smaller than the sum of its proper divisors (27019848099228).

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

20102211111012 is a wasteful number, since it uses less digits than its factorization.

20102211111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046612 (or 1046610 counting only the distinct ones).

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

Adding to 20102211111012 its reverse (21011111220102), we get a palindrome (41113322331114).

The spelling of 20102211111012 in words is "twenty trillion, one hundred two billion, two hundred eleven million, one hundred eleven thousand, twelve".