2130020402021 has 4 divisors (see below), whose sum is σ = 2130071160000. Its totient is φ = 2129969644044.

The previous prime is 2130020402009. The next prime is 2130020402033. The reversal of 2130020402021 is 1202040200312.

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 an interprime number because it is at equal distance from previous prime (2130020402009) and next prime (2130020402033).

It is a cyclic number.

It is not a de Polignac number, because 2130020402021 - 2³⁴ = 2112840532837 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 (2130020402071) 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, 25315991 + ... + 25399988.

It is an arithmetic number, because the mean of its divisors is an integer number (532517790000).

Almost surely, 2^{2130020402021} is an apocalyptic number.

It is an amenable number.

2130020402021 is a deficient number, since it is larger than the sum of its proper divisors (50757979).

2130020402021 is an equidigital number, since it uses as much as digits as its factorization.

2130020402021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50757978.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 2130020402021 its reverse (1202040200312), we get a palindrome (3332060602333).

The spelling of 2130020402021 in words is "two trillion, one hundred thirty billion, twenty million, four hundred two thousand, twenty-one".