20200012221 has 32 divisors (see below), whose sum is σ = 28847760768. Its totient is φ = 12528230400.

The previous prime is 20200012213. The next prime is 20200012243. The reversal of 20200012221 is 12221000202.

It is not a de Polignac number, because 20200012221 - 2³ = 20200012213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20200012197 and 20200012206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200012211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3463710 + ... + 3469536.

It is an arithmetic number, because the mean of its divisors is an integer number (901492524).

Almost surely, 2^20200012221 is an apocalyptic number.

It is an amenable number.

20200012221 is a deficient number, since it is larger than the sum of its proper divisors (8647748547).

20200012221 is a wasteful number, since it uses less digits than its factorization.

20200012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6621.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20200012221 its reverse (12221000202), we get a palindrome (32421012423).

The spelling of 20200012221 in words is "twenty billion, two hundred million, twelve thousand, two hundred twenty-one".