22102221221012 has 24 divisors (see below), whose sum is σ = 40361799030336. Its totient is φ = 10570307715968.

The previous prime is 22102221220991. The next prime is 22102221221023. The reversal of 22102221221012 is 21012212220122.

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, 563093 + ... + 6672444.

It is an arithmetic number, because the mean of its divisors is an integer number (1681741626264).

Almost surely, 2^{22102221221012} is an apocalyptic number.

It is an amenable number.

22102221221012 is a deficient number, since it is larger than the sum of its proper divisors (18259577809324).

22102221221012 is a wasteful number, since it uses less digits than its factorization.

22102221221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7268767 (or 7268765 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22102221221012 its reverse (21012212220122), we get a palindrome (43114433441134).

The spelling of 22102221221012 in words is "twenty-two trillion, one hundred two billion, two hundred twenty-one million, two hundred twenty-one thousand, twelve".