2123012333291 has 2 divisors, whose sum is σ = 2123012333292. Its totient is φ = 2123012333290.

The previous prime is 2123012333269. The next prime is 2123012333341. The reversal of 2123012333291 is 1923332103212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2123012333291 is a prime.

It is a super-3 number, since 3×2123012333291³ (a number of 38 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2123012333201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061506166645 + 1061506166646.

It is an arithmetic number, because the mean of its divisors is an integer number (1061506166646).

Almost surely, 2^{2123012333291} is an apocalyptic number.

2123012333291 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123012333291 is an equidigital number, since it uses as much as digits as its factorization.

2123012333291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 32.

The spelling of 2123012333291 in words is "two trillion, one hundred twenty-three billion, twelve million, three hundred thirty-three thousand, two hundred ninety-one".