122023505251 has 4 divisors (see below), whose sum is σ = 122025137872. Its totient is φ = 122021872632.

The previous prime is 122023505189. The next prime is 122023505281. The reversal of 122023505251 is 152505320221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 152505320221 = 3779 ⋅40355999.

It is a cyclic number.

It is not a de Polignac number, because 122023505251 - 2¹³ = 122023497059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122023505281) 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, 698535 + ... + 855568.

It is an arithmetic number, because the mean of its divisors is an integer number (30506284468).

Almost surely, 2^122023505251 is an apocalyptic number.

122023505251 is a deficient number, since it is larger than the sum of its proper divisors (1632621).

122023505251 is an equidigital number, since it uses as much as digits as its factorization.

122023505251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632620.

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 122023505251 its reverse (152505320221), we get a palindrome (274528825472).

The spelling of 122023505251 in words is "one hundred twenty-two billion, twenty-three million, five hundred five thousand, two hundred fifty-one".