121422423431 has 2 divisors, whose sum is σ = 121422423432. Its totient is φ = 121422423430.

The previous prime is 121422423407. The next prime is 121422423481. The reversal of 121422423431 is 134324224121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121422423431 is a prime.

It is a super-2 number, since 2×121422423431² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121422423394 and 121422423403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121422423481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60711211715 + 60711211716.

It is an arithmetic number, because the mean of its divisors is an integer number (60711211716).

Almost surely, 2^121422423431 is an apocalyptic number.

121422423431 is a deficient number, since it is larger than the sum of its proper divisors (1).

121422423431 is an equidigital number, since it uses as much as digits as its factorization.

121422423431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 29.

Adding to 121422423431 its reverse (134324224121), we get a palindrome (255746647552).

The spelling of 121422423431 in words is "one hundred twenty-one billion, four hundred twenty-two million, four hundred twenty-three thousand, four hundred thirty-one".