22121000002212 has 48 divisors (see below), whose sum is σ = 51989542543680. Its totient is φ = 7320261013632.

The previous prime is 22121000002207. The next prime is 22121000002253. The reversal of 22121000002212 is 21220000012122.

It is a junction number, because it is equal to n+sod(n) for n = 22121000002191 and 22121000002200.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34976458 + ... + 35603294.

It is an arithmetic number, because the mean of its divisors is an integer number (1083115469660).

Almost surely, 2^{22121000002212} is an apocalyptic number.

It is an amenable number.

22121000002212 is an abundant number, since it is smaller than the sum of its proper divisors (29868542541468).

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

22121000002212 is a wasteful number, since it uses less digits than its factorization.

22121000002212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648140 (or 648138 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22121000002212 its reverse (21220000012122), we get a palindrome (43341000014334).

The spelling of 22121000002212 in words is "twenty-two trillion, one hundred twenty-one billion, two thousand, two hundred twelve".