2120002316421 has 24 divisors (see below), whose sum is σ = 3289765393152. Its totient is φ = 1209270480000.

The previous prime is 2120002316413. The next prime is 2120002316423. The reversal of 2120002316421 is 1246132000212.

It is not a de Polignac number, because 2120002316421 - 2³ = 2120002316413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120002316391 and 2120002316400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120002316423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 171765205 + ... + 171777546.

It is an arithmetic number, because the mean of its divisors is an integer number (137073558048).

Almost surely, 2^{2120002316421} is an apocalyptic number.

It is an amenable number.

2120002316421 is a deficient number, since it is larger than the sum of its proper divisors (1169763076731).

2120002316421 is a wasteful number, since it uses less digits than its factorization.

2120002316421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343542793 (or 343542782 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 2120002316421 its reverse (1246132000212), we get a palindrome (3366134316633).

The spelling of 2120002316421 in words is "two trillion, one hundred twenty billion, two million, three hundred sixteen thousand, four hundred twenty-one".