20100222212 has 24 divisors (see below), whose sum is σ = 40228774656. Its totient is φ = 8608310208.

The previous prime is 20100222211. The next prime is 20100222251. The reversal of 20100222212 is 21222200102.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (20100222211) 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, 212393 + ... + 292080.

It is an arithmetic number, because the mean of its divisors is an integer number (1676198944).

Almost surely, 2^20100222212 is an apocalyptic number.

It is an amenable number.

20100222212 is an abundant number, since it is smaller than the sum of its proper divisors (20128552444).

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

20100222212 is a wasteful number, since it uses less digits than its factorization.

20100222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505907 (or 505905 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20100222212 its reverse (21222200102), we get a palindrome (41322422314).

The spelling of 20100222212 in words is "twenty billion, one hundred million, two hundred twenty-two thousand, two hundred twelve".