20211021112 has 16 divisors (see below), whose sum is σ = 37962273600. Its totient is φ = 10087748160.

The previous prime is 20211021101. The next prime is 20211021139. The reversal of 20211021112 is 21112011202.

It is a junction number, because it is equal to n+sod(n) for n = 20211021092 and 20211021101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2215464 + ... + 2224567.

It is an arithmetic number, because the mean of its divisors is an integer number (2372642100).

Almost surely, 2^20211021112 is an apocalyptic number.

It is an amenable number.

20211021112 is a deficient number, since it is larger than the sum of its proper divisors (17751252488).

20211021112 is a wasteful number, since it uses less digits than its factorization.

20211021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4440606 (or 4440602 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20211021112 its reverse (21112011202), we get a palindrome (41323032314).

The spelling of 20211021112 in words is "twenty billion, two hundred eleven million, twenty-one thousand, one hundred twelve".