220202011021 has 4 divisors (see below), whose sum is σ = 220359412000. Its totient is φ = 220044610044.

The previous prime is 220202010979. The next prime is 220202011039. The reversal of 220202011021 is 120110202022.

It is a happy number.

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 not a de Polignac number, because 220202011021 - 2⁷ = 220202010893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220202010992 and 220202011010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220202011061) 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, 78698391 + ... + 78701188.

It is an arithmetic number, because the mean of its divisors is an integer number (55089853000).

Almost surely, 2^220202011021 is an apocalyptic number.

It is an amenable number.

220202011021 is a deficient number, since it is larger than the sum of its proper divisors (157400979).

220202011021 is a wasteful number, since it uses less digits than its factorization.

220202011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157400978.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 220202011021 its reverse (120110202022), we get a palindrome (340312213043).

The spelling of 220202011021 in words is "two hundred twenty billion, two hundred two million, eleven thousand, twenty-one".