220230001021 has 4 divisors (see below), whose sum is σ = 220232131200. Its totient is φ = 220227870844.

The previous prime is 220230001009. The next prime is 220230001049. The reversal of 220230001021 is 120100032022.

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 220230001021 - 2²⁷ = 220095783293 is a prime.

It is a super-2 number, since 2×220230001021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220230000992 and 220230001010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220230001421) 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, 901651 + ... + 1119568.

It is an arithmetic number, because the mean of its divisors is an integer number (55058032800).

Almost surely, 2^220230001021 is an apocalyptic number.

It is an amenable number.

220230001021 is a deficient number, since it is larger than the sum of its proper divisors (2130179).

220230001021 is a wasteful number, since it uses less digits than its factorization.

220230001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130178.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 220230001021 its reverse (120100032022), we get a palindrome (340330033043).

The spelling of 220230001021 in words is "two hundred twenty billion, two hundred thirty million, one thousand, twenty-one".