20112211101012 has 24 divisors (see below), whose sum is σ = 49688992132416. Its totient is φ = 6309713286528.

The previous prime is 20112211101001. The next prime is 20112211101019. The reversal of 20112211101012 is 21010111221102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20112211100982 and 20112211101000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112211101019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49294634848 + ... + 49294635255.

It is an arithmetic number, because the mean of its divisors is an integer number (2070374672184).

Almost surely, 2^{20112211101012} is an apocalyptic number.

It is an amenable number.

20112211101012 is an abundant number, since it is smaller than the sum of its proper divisors (29576781031404).

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

20112211101012 is a wasteful number, since it uses less digits than its factorization.

20112211101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98589270127 (or 98589270125 counting only the distinct ones).

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

Adding to 20112211101012 its reverse (21010111221102), we get a palindrome (41122322322114).

The spelling of 20112211101012 in words is "twenty trillion, one hundred twelve billion, two hundred eleven million, one hundred one thousand, twelve".