20112111210 has 16 divisors (see below), whose sum is σ = 48269066976. Its totient is φ = 5363229648.

The previous prime is 20112111209. The next prime is 20112111221. The reversal of 20112111210 is 1211121102.

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 7 ways as a sum of consecutive naturals, for example, 335201824 + ... + 335201883.

It is an arithmetic number, because the mean of its divisors is an integer number (3016816686).

Almost surely, 2^20112111210 is an apocalyptic number.

20112111210 is an abundant number, since it is smaller than the sum of its proper divisors (28156955766).

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

20112111210 is a wasteful number, since it uses less digits than its factorization.

20112111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670403717.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20112111210 its reverse (1211121102), we get a palindrome (21323232312).

The spelling of 20112111210 in words is "twenty billion, one hundred twelve million, one hundred eleven thousand, two hundred ten".