212212112100 has 36 divisors (see below), whose sum is σ = 614000378544. Its totient is φ = 56589896480.

The previous prime is 212212112053. The next prime is 212212112111. The reversal of 212212112100 is 1211212212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 212212112100.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 353686554 + ... + 353687153.

Almost surely, 2^212212112100 is an apocalyptic number.

212212112100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212212112100 is an abundant number, since it is smaller than the sum of its proper divisors (401788266444).

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

212212112100 is a wasteful number, since it uses less digits than its factorization.

212212112100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707373724 (or 707373717 counting only the distinct ones).

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

Adding to 212212112100 its reverse (1211212212), we get a palindrome (213423324312).

It can be divided in two parts, 212212112 and 100, that added together give a palindrome (212212212).

The spelling of 212212112100 in words is "two hundred twelve billion, two hundred twelve million, one hundred twelve thousand, one hundred".