220202012001021 has 4 divisors (see below), whose sum is σ = 293602682668032. Its totient is φ = 146801341334012.

The previous prime is 220202012001011. The next prime is 220202012001091. The reversal of 220202012001021 is 120100210202022.

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 220202012001021 - 2¹³ = 220202011992829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220202012001011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36700335333501 + ... + 36700335333506.

It is an arithmetic number, because the mean of its divisors is an integer number (73400670667008).

Almost surely, 2^{220202012001021} is an apocalyptic number.

It is an amenable number.

220202012001021 is a deficient number, since it is larger than the sum of its proper divisors (73400670667011).

220202012001021 is an equidigital number, since it uses as much as digits as its factorization.

220202012001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73400670667010.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 220202012001021 its reverse (120100210202022), we get a palindrome (340302222203043).

The spelling of 220202012001021 in words is "two hundred twenty trillion, two hundred two billion, twelve million, one thousand, twenty-one".