121541415412 has 12 divisors (see below), whose sum is σ = 212736954276. Its totient is φ = 60759428480.

The previous prime is 121541415371. The next prime is 121541415427. The reversal of 121541415412 is 214514145121.

It can be written as a sum of positive squares in 2 ways, for example, as 92632574736 + 28908840676 = 304356^2 + 170026^2 .

It is a super-2 number, since 2×121541415412² (a number of 23 digits) contains 22 as substring.

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, 2795539 + ... + 2838682.

It is an arithmetic number, because the mean of its divisors is an integer number (17728079523).

Almost surely, 2^121541415412 is an apocalyptic number.

It is an amenable number.

121541415412 is a deficient number, since it is larger than the sum of its proper divisors (91195538864).

121541415412 is a wasteful number, since it uses less digits than its factorization.

121541415412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5639618 (or 5639616 counting only the distinct ones).

The product of its digits is 6400, while the sum is 31.

The spelling of 121541415412 in words is "one hundred twenty-one billion, five hundred forty-one million, four hundred fifteen thousand, four hundred twelve".