221212000102100 has 36 divisors (see below), whose sum is σ = 548605760254944. Its totient is φ = 75844114320480.

The previous prime is 221212000102069. The next prime is 221212000102153. The reversal of 221212000102100 is 1201000212122.

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

It is a congruent number.

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, 158008570802 + ... + 158008572201.

Almost surely, 2^{221212000102100} is an apocalyptic number.

221212000102100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221212000102100 is an abundant number, since it is smaller than the sum of its proper divisors (327393760152844).

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

221212000102100 is a wasteful number, since it uses less digits than its factorization.

221212000102100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316017143024 (or 316017143017 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221212000102100 its reverse (1201000212122), we get a palindrome (222413000314222).

The spelling of 221212000102100 in words is "two hundred twenty-one trillion, two hundred twelve billion, one hundred two thousand, one hundred".