20312102211 has 8 divisors (see below), whose sum is σ = 27087087360. Its totient is φ = 13539259272.

The previous prime is 20312102203. The next prime is 20312102219. The reversal of 20312102211 is 11220121302.

It is an interprime number because it is at equal distance from previous prime (20312102203) and next prime (20312102219).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20312102211 - 2³ = 20312102203 is a prime.

It is a super-2 number, since 2×20312102211² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20312102219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513295 + ... + 551448.

It is an arithmetic number, because the mean of its divisors is an integer number (3385885920).

Almost surely, 2^20312102211 is an apocalyptic number.

20312102211 is a deficient number, since it is larger than the sum of its proper divisors (6774985149).

20312102211 is a wasteful number, since it uses less digits than its factorization.

20312102211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071105.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20312102211 its reverse (11220121302), we get a palindrome (31532223513).

The spelling of 20312102211 in words is "twenty billion, three hundred twelve million, one hundred two thousand, two hundred eleven".