2121026201123 has 2 divisors, whose sum is σ = 2121026201124. Its totient is φ = 2121026201122.

The previous prime is 2121026201113. The next prime is 2121026201171. The reversal of 2121026201123 is 3211026201212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121026201123 - 2¹⁶ = 2121026135587 is a prime.

It is a super-2 number, since 2×2121026201123² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2121026201113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060513100561 + 1060513100562.

It is an arithmetic number, because the mean of its divisors is an integer number (1060513100562).

Almost surely, 2^{2121026201123} is an apocalyptic number.

2121026201123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121026201123 is an equidigital number, since it uses as much as digits as its factorization.

2121026201123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 2121026201123 in words is "two trillion, one hundred twenty-one billion, twenty-six million, two hundred one thousand, one hundred twenty-three".