20021302312 has 32 divisors (see below), whose sum is σ = 40978127520. Its totient is φ = 9094933440.

The previous prime is 20021302309. The next prime is 20021302337. The reversal of 20021302312 is 21320312002.

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, 73258 + ... + 213094.

It is an arithmetic number, because the mean of its divisors is an integer number (1280566485).

Almost surely, 2^20021302312 is an apocalyptic number.

20021302312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20021302312 is an abundant number, since it is smaller than the sum of its proper divisors (20956825208).

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

20021302312 is a wasteful number, since it uses less digits than its factorization.

20021302312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141481 (or 141477 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20021302312 its reverse (21320312002), we get a palindrome (41341614314).

The spelling of 20021302312 in words is "twenty billion, twenty-one million, three hundred two thousand, three hundred twelve".