20002213444 has 24 divisors (see below), whose sum is σ = 36850736160. Its totient is φ = 9473561856.

The previous prime is 20002213397. The next prime is 20002213487. The reversal of 20002213444 is 44431220002.

It is a happy number.

It is a super-2 number, since 2×20002213444² (a number of 21 digits) contains 22 as substring.

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, 1141719 + ... + 1159105.

It is an arithmetic number, because the mean of its divisors is an integer number (1535447340).

Almost surely, 2^20002213444 is an apocalyptic number.

It is an amenable number.

20002213444 is a deficient number, since it is larger than the sum of its proper divisors (16848522716).

20002213444 is a wasteful number, since it uses less digits than its factorization.

20002213444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32547 (or 32545 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 20002213444 its reverse (44431220002), we get a palindrome (64433433446).

The spelling of 20002213444 in words is "twenty billion, two million, two hundred thirteen thousand, four hundred forty-four".