121401025422 has 32 divisors (see below), whose sum is σ = 244782895104. Its totient is φ = 40137048000.

The previous prime is 121401025399. The next prime is 121401025429. The reversal of 121401025422 is 224520104121.

It is a junction number, because it is equal to n+sod(n) for n = 121401025392 and 121401025401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121401025429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2936797 + ... + 2977847.

It is an arithmetic number, because the mean of its divisors is an integer number (7649465472).

Almost surely, 2^121401025422 is an apocalyptic number.

121401025422 is an abundant number, since it is smaller than the sum of its proper divisors (123381869682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121401025422 is a wasteful number, since it uses less digits than its factorization.

121401025422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45064.

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 121401025422 its reverse (224520104121), we get a palindrome (345921129543).

The spelling of 121401025422 in words is "one hundred twenty-one billion, four hundred one million, twenty-five thousand, four hundred twenty-two".