210002021211121 has 4 divisors (see below), whose sum is σ = 210014669666032. Its totient is φ = 209989372756212.

The previous prime is 210002021211107. The next prime is 210002021211133. The reversal of 210002021211121 is 121112120200012.

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 210002021211121 - 2¹⁵ = 210002021178353 is a prime.

It is a super-2 number, since 2×210002021211121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210002021211095 and 210002021211104.

It is not an unprimeable number, because it can be changed into a prime (210002021211821) 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, 6324202551 + ... + 6324235756.

It is an arithmetic number, because the mean of its divisors is an integer number (52503667416508).

Almost surely, 2^{210002021211121} is an apocalyptic number.

It is an amenable number.

210002021211121 is a deficient number, since it is larger than the sum of its proper divisors (12648454911).

210002021211121 is a wasteful number, since it uses less digits than its factorization.

210002021211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12648454910.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 210002021211121 its reverse (121112120200012), we get a palindrome (331114141411133).

The spelling of 210002021211121 in words is "two hundred ten trillion, two billion, twenty-one million, two hundred eleven thousand, one hundred twenty-one".