22001013000 has 96 divisors (see below), whose sum is σ = 74363454360. Its totient is φ = 5866934400.

The previous prime is 22001012989. The next prime is 22001013017. The reversal of 22001013000 is 31010022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8397523044 + 13603489956 = 91638^2 + 116634^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1213279 + ... + 1231278.

Almost surely, 2^22001013000 is an apocalyptic number.

22001013000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22001013000 is an abundant number, since it is smaller than the sum of its proper divisors (52362441360).

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

22001013000 is a wasteful number, since it uses less digits than its factorization.

22001013000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2444584 (or 2444567 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 22001013000 its reverse (31010022), we get a palindrome (22032023022).

The spelling of 22001013000 in words is "twenty-two billion, one million, thirteen thousand".