22021101001212 has 24 divisors (see below), whose sum is σ = 51612984116736. Its totient is φ = 7307450555568.

The previous prime is 22021101001187. The next prime is 22021101001247. The reversal of 22021101001212 is 21210010112022.

It is a junction number, because it is equal to n+sod(n) for n = 22021101001191 and 22021101001200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4114552818 + ... + 4114558169.

It is an arithmetic number, because the mean of its divisors is an integer number (2150541004864).

Almost surely, 2^{22021101001212} is an apocalyptic number.

It is an amenable number.

22021101001212 is an abundant number, since it is smaller than the sum of its proper divisors (29591883115524).

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

22021101001212 is a wasteful number, since it uses less digits than its factorization.

22021101001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8229111217 (or 8229111215 counting only the distinct ones).

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

Adding to 22021101001212 its reverse (21210010112022), we get a palindrome (43231111113234).

The spelling of 22021101001212 in words is "twenty-two trillion, twenty-one billion, one hundred one million, one thousand, two hundred twelve".