121240615132 has 72 divisors (see below), whose sum is σ = 271452250944. Its totient is φ = 46942777728.

The previous prime is 121240615121. The next prime is 121240615157. The reversal of 121240615132 is 231516042121.

It is a super-3 number, since 3×121240615132³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 121240615132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 386443 + ... + 625954.

It is an arithmetic number, because the mean of its divisors is an integer number (3770170152).

Almost surely, 2^121240615132 is an apocalyptic number.

It is an amenable number.

121240615132 is an abundant number, since it is smaller than the sum of its proper divisors (150211635812).

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

121240615132 is a wasteful number, since it uses less digits than its factorization.

121240615132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012475 (or 1012466 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 121240615132 its reverse (231516042121), we get a palindrome (352756657253).

The spelling of 121240615132 in words is "one hundred twenty-one billion, two hundred forty million, six hundred fifteen thousand, one hundred thirty-two".