210220113233021 has 4 divisors (see below), whose sum is σ = 210220144888572. Its totient is φ = 210220081577472.

The previous prime is 210220113233017. The next prime is 210220113233059. The reversal of 210220113233021 is 120332311022012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 142319794005796 + 67900319227225 = 11929786^2 + 8240165^2 .

It is a cyclic number.

It is not a de Polignac number, because 210220113233021 - 2² = 210220113233017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210220113233321) 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, 1608260 + ... + 20567613.

It is an arithmetic number, because the mean of its divisors is an integer number (52555036222143).

Almost surely, 2^{210220113233021} is an apocalyptic number.

It is an amenable number.

210220113233021 is a deficient number, since it is larger than the sum of its proper divisors (31655551).

210220113233021 is an equidigital number, since it uses as much as digits as its factorization.

210220113233021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31655550.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 210220113233021 its reverse (120332311022012), we get a palindrome (330552424255033).

The spelling of 210220113233021 in words is "two hundred ten trillion, two hundred twenty billion, one hundred thirteen million, two hundred thirty-three thousand, twenty-one".