2121010021323 has 12 divisors (see below), whose sum is σ = 3077419625280. Its totient is φ = 1407665842416.

The previous prime is 2121010021303. The next prime is 2121010021343. The reversal of 2121010021323 is 3231200101212.

2121010021323 is a `hidden beast` number, since 212 + 10 + 100 + 21 + 323 = 666.

It is an interprime number because it is at equal distance from previous prime (2121010021303) and next prime (2121010021343).

It is not a de Polignac number, because 2121010021323 - 2¹⁶ = 2121009955787 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121010021296 and 2121010021305.

It is not an unprimeable number, because it can be changed into a prime (2121010021303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 528401088 + ... + 528405101.

It is an arithmetic number, because the mean of its divisors is an integer number (256451635440).

Almost surely, 2^{2121010021323} is an apocalyptic number.

2121010021323 is a deficient number, since it is larger than the sum of its proper divisors (956409603957).

2121010021323 is a wasteful number, since it uses less digits than its factorization.

2121010021323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056806418 (or 1056806415 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2121010021323 its reverse (3231200101212), we get a palindrome (5352210122535).

The spelling of 2121010021323 in words is "two trillion, one hundred twenty-one billion, ten million, twenty-one thousand, three hundred twenty-three".