22100101221012 has 48 divisors (see below), whose sum is σ = 52713337232640. Its totient is φ = 7203217318272.

The previous prime is 22100101221001. The next prime is 22100101221047. The reversal of 22100101221012 is 21012210100122.

It is a junction number, because it is equal to n+sod(n) for n = 22100101220982 and 22100101221000.

It is a congruent number.

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, 17724763 + ... + 18930594.

It is an arithmetic number, because the mean of its divisors is an integer number (1098194525680).

Almost surely, 2^{22100101221012} is an apocalyptic number.

It is an amenable number.

22100101221012 is an abundant number, since it is smaller than the sum of its proper divisors (30613236011628).

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

22100101221012 is a wasteful number, since it uses less digits than its factorization.

22100101221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36656480 (or 36656478 counting only the distinct ones).

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

Adding to 22100101221012 its reverse (21012210100122), we get a palindrome (43112311321134).

The spelling of 22100101221012 in words is "twenty-two trillion, one hundred billion, one hundred one million, two hundred twenty-one thousand, twelve".