122345042451251 has 4 divisors (see below), whose sum is σ = 126291656723904. Its totient is φ = 118398428178600.

The previous prime is 122345042451157. The next prime is 122345042451253. The reversal of 122345042451251 is 152154240543221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122345042451251 is a prime.

It is a super-2 number, since 2×122345042451251² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122345042451199 and 122345042451208.

It is not an unprimeable number, because it can be changed into a prime (122345042451253) 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, 1973307136280 + ... + 1973307136341.

It is an arithmetic number, because the mean of its divisors is an integer number (31572914180976).

Almost surely, 2^{122345042451251} is an apocalyptic number.

122345042451251 is a deficient number, since it is larger than the sum of its proper divisors (3946614272653).

122345042451251 is an equidigital number, since it uses as much as digits as its factorization.

122345042451251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3946614272652.

The product of its (nonzero) digits is 384000, while the sum is 41.

Adding to 122345042451251 its reverse (152154240543221), we get a palindrome (274499282994472).

The spelling of 122345042451251 in words is "one hundred twenty-two trillion, three hundred forty-five billion, forty-two million, four hundred fifty-one thousand, two hundred fifty-one".