22101210211212 has 60 divisors (see below), whose sum is σ = 63029377279176. Its totient is φ = 6697336426560.

The previous prime is 22101210211169. The next prime is 22101210211259. The reversal of 22101210211212 is 21211201210122.

22101210211212 is a `hidden beast` number, since 22 + 10 + 1 + 210 + 211 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3100615153 + ... + 3100622280.

Almost surely, 2^{22101210211212} is an apocalyptic number.

22101210211212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22101210211212 is an abundant number, since it is smaller than the sum of its proper divisors (40928167067964).

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

22101210211212 is a wasteful number, since it uses less digits than its factorization.

22101210211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6201237460 (or 6201237449 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 22101210211212 its reverse (21211201210122), we get a palindrome (43312411421334).

The spelling of 22101210211212 in words is "twenty-two trillion, one hundred one billion, two hundred ten million, two hundred eleven thousand, two hundred twelve".