2130202012021 has 4 divisors (see below), whose sum is σ = 2130330983200. Its totient is φ = 2130073040844.

The previous prime is 2130202012013. The next prime is 2130202012031. The reversal of 2130202012021 is 1202102020312.

It is a happy number.

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 2130202012021 - 2³ = 2130202012013 is a prime.

It is a super-2 number, since 2×2130202012021² (a number of 25 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 = 2130202011986 and 2130202012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130202012031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64460811 + ... + 64493848.

It is an arithmetic number, because the mean of its divisors is an integer number (532582745800).

Almost surely, 2^{2130202012021} is an apocalyptic number.

It is an amenable number.

2130202012021 is a deficient number, since it is larger than the sum of its proper divisors (128971179).

2130202012021 is a wasteful number, since it uses less digits than its factorization.

2130202012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128971178.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 2130202012021 its reverse (1202102020312), we get a palindrome (3332304032333).

The spelling of 2130202012021 in words is "two trillion, one hundred thirty billion, two hundred two million, twelve thousand, twenty-one".