220200200102021 has 4 divisors (see below), whose sum is σ = 221934059945472. Its totient is φ = 218466340258572.

The previous prime is 220200200102011. The next prime is 220200200102023. The reversal of 220200200102021 is 120201002002022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220200200102021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220200200101987 and 220200200102005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220200200102023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 866929921535 + ... + 866929921788.

It is an arithmetic number, because the mean of its divisors is an integer number (55483514986368).

Almost surely, 2^{220200200102021} is an apocalyptic number.

It is an amenable number.

220200200102021 is a deficient number, since it is larger than the sum of its proper divisors (1733859843451).

220200200102021 is a wasteful number, since it uses less digits than its factorization.

220200200102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733859843450.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 220200200102021 its reverse (120201002002022), we get a palindrome (340401202104043).

The spelling of 220200200102021 in words is "two hundred twenty trillion, two hundred billion, two hundred million, one hundred two thousand, twenty-one".