2123030221291 has 16 divisors (see below), whose sum is σ = 2439015727104. Its totient is φ = 1810219544064.

The previous prime is 2123030221241. The next prime is 2123030221363. The reversal of 2123030221291 is 1921220303212.

It is a cyclic number.

It is not a de Polignac number, because 2123030221291 - 2³⁷ = 1985591267819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123030221231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47704536 + ... + 47749018.

It is an arithmetic number, because the mean of its divisors is an integer number (152438482944).

Almost surely, 2^{2123030221291} is an apocalyptic number.

2123030221291 is a deficient number, since it is larger than the sum of its proper divisors (315985505813).

2123030221291 is a wasteful number, since it uses less digits than its factorization.

2123030221291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80010.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 2123030221291 in words is "two trillion, one hundred twenty-three billion, thirty million, two hundred twenty-one thousand, two hundred ninety-one".