121342022125 has 8 divisors (see below), whose sum is σ = 151434843768. Its totient is φ = 97073617600.

The previous prime is 121342022117. The next prime is 121342022141. The reversal of 121342022125 is 521220243121.

It can be written as a sum of positive squares in 4 ways, for example, as 29315945961 + 92026076164 = 171219^2 + 303358^2 .

It is not a de Polignac number, because 121342022125 - 2³ = 121342022117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 121342022125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485367964 + ... + 485368213.

It is an arithmetic number, because the mean of its divisors is an integer number (18929355471).

Almost surely, 2^121342022125 is an apocalyptic number.

It is an amenable number.

121342022125 is a deficient number, since it is larger than the sum of its proper divisors (30092821643).

121342022125 is an frugal number, since it uses more digits than its factorization.

121342022125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970736192 (or 970736182 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 121342022125 its reverse (521220243121), we get a palindrome (642562265246).

The spelling of 121342022125 in words is "one hundred twenty-one billion, three hundred forty-two million, twenty-two thousand, one hundred twenty-five".