20403042212 has 24 divisors (see below), whose sum is σ = 42122411520. Its totient is φ = 8462090880.

The previous prime is 20403042199. The next prime is 20403042221. The reversal of 20403042212 is 21224030402.

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, 11752037 + ... + 11753772.

It is an arithmetic number, because the mean of its divisors is an integer number (1755100480).

Almost surely, 2^20403042212 is an apocalyptic number.

It is an amenable number.

20403042212 is an abundant number, since it is smaller than the sum of its proper divisors (21719369308).

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

20403042212 is a wasteful number, since it uses less digits than its factorization.

20403042212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23505851 (or 23505849 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20403042212 its reverse (21224030402), we get a palindrome (41627072614).

The spelling of 20403042212 in words is "twenty billion, four hundred three million, forty-two thousand, two hundred twelve".