22000012002 has 48 divisors (see below), whose sum is σ = 47897137080. Its totient is φ = 7297952256.

The previous prime is 22000011977. The next prime is 22000012031. The reversal of 22000012002 is 20021000022.

It can be written as a sum of positive squares in 4 ways, for example, as 14301528921 + 7698483081 = 119589^2 + 87741^2 .

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, 5028688 + ... + 5033060.

Almost surely, 2^22000012002 is an apocalyptic number.

22000012002 is an abundant number, since it is smaller than the sum of its proper divisors (25897125078).

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

22000012002 is a wasteful number, since it uses less digits than its factorization.

22000012002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5667 (or 5664 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 22000012002 its reverse (20021000022), we get a palindrome (42021012024).

The spelling of 22000012002 in words is "twenty-two billion, twelve thousand, two".