210012010021001 has 4 divisors (see below), whose sum is σ = 210012192072912. Its totient is φ = 210011827969092.

The previous prime is 210012010020941. The next prime is 210012010021007. The reversal of 210012010021001 is 100120010210012.

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 210012010021001 - 2²⁶ = 210011942912137 is a prime.

It is a super-2 number, since 2×210012010021001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210012010021007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89284475 + ... + 91606448.

It is an arithmetic number, because the mean of its divisors is an integer number (52503048018228).

Almost surely, 2^{210012010021001} is an apocalyptic number.

It is an amenable number.

210012010021001 is a deficient number, since it is larger than the sum of its proper divisors (182051911).

210012010021001 is a wasteful number, since it uses less digits than its factorization.

210012010021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182051910.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 210012010021001 its reverse (100120010210012), we get a palindrome (310132020231013).

The spelling of 210012010021001 in words is "two hundred ten trillion, twelve billion, ten million, twenty-one thousand, one".