2123237172151 has 4 divisors (see below), whose sum is σ = 2123278342312. Its totient is φ = 2123196001992.

The previous prime is 2123237172109. The next prime is 2123237172209. The reversal of 2123237172151 is 1512717323212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2123237172151 - 2³¹ = 2121089688503 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2123237172151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123237172451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20507625 + ... + 20610898.

It is an arithmetic number, because the mean of its divisors is an integer number (530819585578).

Almost surely, 2^{2123237172151} is an apocalyptic number.

2123237172151 is a deficient number, since it is larger than the sum of its proper divisors (41170161).

2123237172151 is an equidigital number, since it uses as much as digits as its factorization.

2123237172151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41170160.

The product of its digits is 35280, while the sum is 37.

The spelling of 2123237172151 in words is "two trillion, one hundred twenty-three billion, two hundred thirty-seven million, one hundred seventy-two thousand, one hundred fifty-one".