120166023251 has 4 divisors (see below), whose sum is σ = 127234612872. Its totient is φ = 113097433632.

The previous prime is 120166023181. The next prime is 120166023259. The reversal of 120166023251 is 152320661021.

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 120166023251 - 2³⁴ = 102986154067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120166023259) 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, 3534294785 + ... + 3534294818.

It is an arithmetic number, because the mean of its divisors is an integer number (31808653218).

Almost surely, 2^120166023251 is an apocalyptic number.

120166023251 is a deficient number, since it is larger than the sum of its proper divisors (7068589621).

120166023251 is an equidigital number, since it uses as much as digits as its factorization.

120166023251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7068589620.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 120166023251 its reverse (152320661021), we get a palindrome (272486684272).

The spelling of 120166023251 in words is "one hundred twenty billion, one hundred sixty-six million, twenty-three thousand, two hundred fifty-one".