122551004431 has 4 divisors (see below), whose sum is σ = 123740820112. Its totient is φ = 121361188752.

The previous prime is 122551004383. The next prime is 122551004467. The reversal of 122551004431 is 134400155221.

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 122551004431 - 2⁹ = 122551003919 is a prime.

It is a super-2 number, since 2×122551004431² (a number of 23 digits) contains 22 as substring.

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 122551004431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122551004491) 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, 594907686 + ... + 594907891.

It is an arithmetic number, because the mean of its divisors is an integer number (30935205028).

Almost surely, 2^122551004431 is an apocalyptic number.

122551004431 is a deficient number, since it is larger than the sum of its proper divisors (1189815681).

122551004431 is a wasteful number, since it uses less digits than its factorization.

122551004431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189815680.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 122551004431 its reverse (134400155221), we get a palindrome (256951159652).

The spelling of 122551004431 in words is "one hundred twenty-two billion, five hundred fifty-one million, four thousand, four hundred thirty-one".