20211102312 has 32 divisors (see below), whose sum is σ = 50561779200. Its totient is φ = 6732497664.

The previous prime is 20211102287. The next prime is 20211102371. The reversal of 20211102312 is 21320111202.

It is a super-2 number, since 2×20211102312² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20211102291 and 20211102300.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247048 + ... + 318519.

It is an arithmetic number, because the mean of its divisors is an integer number (1580055600).

Almost surely, 2^20211102312 is an apocalyptic number.

It is an amenable number.

20211102312 is an abundant number, since it is smaller than the sum of its proper divisors (30350676888).

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

20211102312 is a wasteful number, since it uses less digits than its factorization.

20211102312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567065 (or 567061 counting only the distinct ones).

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

Adding to 20211102312 its reverse (21320111202), we get a palindrome (41531213514).

The spelling of 20211102312 in words is "twenty billion, two hundred eleven million, one hundred two thousand, three hundred twelve".