210021010021013 has 8 divisors (see below), whose sum is σ = 223738298565600. Its totient is φ = 196570076593968.

The previous prime is 210021010020989. The next prime is 210021010021057. The reversal of 210021010021013 is 310120010120012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210021010021013 - 2¹⁸ = 210021009758869 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 (210021010011013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66588777758 + ... + 66588780911.

It is an arithmetic number, because the mean of its divisors is an integer number (27967287320700).

Almost surely, 2^{210021010021013} is an apocalyptic number.

It is an amenable number.

210021010021013 is a deficient number, since it is larger than the sum of its proper divisors (13717288544587).

210021010021013 is a wasteful number, since it uses less digits than its factorization.

210021010021013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133177558771.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 210021010021013 its reverse (310120010120012), we get a palindrome (520141020141025).

The spelling of 210021010021013 in words is "two hundred ten trillion, twenty-one billion, ten million, twenty-one thousand, thirteen".