20212323402 has 16 divisors (see below), whose sum is σ = 40518444672. Its totient is φ = 6721808160.

The previous prime is 20212323379. The next prime is 20212323413. The reversal of 20212323402 is 20432321202.

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, 3905443 + ... + 3910614.

It is an arithmetic number, because the mean of its divisors is an integer number (2532402792).

Almost surely, 2^20212323402 is an apocalyptic number.

20212323402 is an abundant number, since it is smaller than the sum of its proper divisors (20306121270).

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

20212323402 is a wasteful number, since it uses less digits than its factorization.

20212323402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7816493.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20212323402 its reverse (20432321202), we get a palindrome (40644644604).

The spelling of 20212323402 in words is "twenty billion, two hundred twelve million, three hundred twenty-three thousand, four hundred two".