213002220021 has 32 divisors (see below), whose sum is σ = 304439116800. Its totient is φ = 132064162560.

The previous prime is 213002219993. The next prime is 213002220023. The reversal of 213002220021 is 120022200312.

It is a happy number.

It is not a de Polignac number, because 213002220021 - 2⁷ = 213002219893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213002220023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2401341 + ... + 2488461.

It is an arithmetic number, because the mean of its divisors is an integer number (9513722400).

Almost surely, 2^213002220021 is an apocalyptic number.

It is an amenable number.

213002220021 is a deficient number, since it is larger than the sum of its proper divisors (91436896779).

213002220021 is a wasteful number, since it uses less digits than its factorization.

213002220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87929.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 213002220021 its reverse (120022200312), we get a palindrome (333024420333).

The spelling of 213002220021 in words is "two hundred thirteen billion, two million, two hundred twenty thousand, twenty-one".