22145355212 has 12 divisors (see below), whose sum is σ = 38755489080. Its totient is φ = 11072358336.

The previous prime is 22145355187. The next prime is 22145355217. The reversal of 22145355212 is 21255354122.

It is not an unprimeable number, because it can be changed into a prime (22145355217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149363 + ... + 258069.

It is an arithmetic number, because the mean of its divisors is an integer number (3229624090).

Almost surely, 2^22145355212 is an apocalyptic number.

It is an amenable number.

22145355212 is a deficient number, since it is larger than the sum of its proper divisors (16610133868).

22145355212 is a wasteful number, since it uses less digits than its factorization.

22145355212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159640 (or 159638 counting only the distinct ones).

The product of its digits is 24000, while the sum is 32.

The spelling of 22145355212 in words is "twenty-two billion, one hundred forty-five million, three hundred fifty-five thousand, two hundred twelve".