121425442312 has 16 divisors (see below), whose sum is σ = 235016985600. Its totient is φ = 58754246160.

The previous prime is 121425442301. The next prime is 121425442379. The reversal of 121425442312 is 213244524121.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244809112 + ... + 244809607.

It is an arithmetic number, because the mean of its divisors is an integer number (14688561600).

Almost surely, 2^121425442312 is an apocalyptic number.

It is an amenable number.

121425442312 is a deficient number, since it is larger than the sum of its proper divisors (113591543288).

121425442312 is a wasteful number, since it uses less digits than its factorization.

121425442312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489618756 (or 489618752 counting only the distinct ones).

The product of its digits is 15360, while the sum is 31.

Adding to 121425442312 its reverse (213244524121), we get a palindrome (334669966433).

The spelling of 121425442312 in words is "one hundred twenty-one billion, four hundred twenty-five million, four hundred forty-two thousand, three hundred twelve".