121135142512 has 20 divisors (see below), whose sum is σ = 235149833376. Its totient is φ = 60451314560.

The previous prime is 121135142509. The next prime is 121135142539. The reversal of 121135142512 is 215241531121.

It is a congruent number.

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, 7257448 + ... + 7274119.

Almost surely, 2^121135142512 is an apocalyptic number.

It is an amenable number.

121135142512 is a deficient number, since it is larger than the sum of its proper divisors (114014690864).

121135142512 is a wasteful number, since it uses less digits than its factorization.

121135142512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14532096 (or 14532090 counting only the distinct ones).

The product of its digits is 2400, while the sum is 28.

Adding to 121135142512 its reverse (215241531121), we get a palindrome (336376673633).

The spelling of 121135142512 in words is "one hundred twenty-one billion, one hundred thirty-five million, one hundred forty-two thousand, five hundred twelve".