20200102221 has 64 divisors (see below), whose sum is σ = 30707712000. Its totient is φ = 11724362496.

The previous prime is 20200102213. The next prime is 20200102229. The reversal of 20200102221 is 12220100202.

It is an interprime number because it is at equal distance from previous prime (20200102213) and next prime (20200102229).

It is not a de Polignac number, because 20200102221 - 2³ = 20200102213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20200102197 and 20200102206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200102229) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9622630 + ... + 9624728.

It is an arithmetic number, because the mean of its divisors is an integer number (479808000).

Almost surely, 2^20200102221 is an apocalyptic number.

It is an amenable number.

20200102221 is a deficient number, since it is larger than the sum of its proper divisors (10507609779).

20200102221 is a wasteful number, since it uses less digits than its factorization.

20200102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2338.

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

Adding to 20200102221 its reverse (12220100202), we get a palindrome (32420202423).

The spelling of 20200102221 in words is "twenty billion, two hundred million, one hundred two thousand, two hundred twenty-one".