2123012130321 has 16 divisors (see below), whose sum is σ = 2860819920000. Its totient is φ = 1400282623488.

The previous prime is 2123012130319. The next prime is 2123012130457. The reversal of 2123012130321 is 1230312103212.

It is not a de Polignac number, because 2123012130321 - 2¹ = 2123012130319 is a prime.

It is a super-2 number, since 2×2123012130321² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2123012130301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343626 + ... + 2089043.

It is an arithmetic number, because the mean of its divisors is an integer number (178801245000).

Almost surely, 2^{2123012130321} is an apocalyptic number.

It is an amenable number.

2123012130321 is a deficient number, since it is larger than the sum of its proper divisors (737807789679).

2123012130321 is a wasteful number, since it uses less digits than its factorization.

2123012130321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2435768.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2123012130321 its reverse (1230312103212), we get a palindrome (3353324233533).

The spelling of 2123012130321 in words is "two trillion, one hundred twenty-three billion, twelve million, one hundred thirty thousand, three hundred twenty-one".