22001232412 has 24 divisors (see below), whose sum is σ = 38588368896. Its totient is φ = 10976010288.

The previous prime is 22001232403. The next prime is 22001232503. The reversal of 22001232412 is 21423210022.

It is a self number, because there is not a number n which added to its sum of digits gives 22001232412.

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, 6579613 + ... + 6582955.

It is an arithmetic number, because the mean of its divisors is an integer number (1607848704).

Almost surely, 2^22001232412 is an apocalyptic number.

It is an amenable number.

22001232412 is a deficient number, since it is larger than the sum of its proper divisors (16587136484).

22001232412 is a wasteful number, since it uses less digits than its factorization.

22001232412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6537 (or 6535 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 22001232412 its reverse (21423210022), we get a palindrome (43424442434).

The spelling of 22001232412 in words is "twenty-two billion, one million, two hundred thirty-two thousand, four hundred twelve".