121565063416 has 16 divisors (see below), whose sum is σ = 230064724440. Its totient is φ = 60214470240.

The previous prime is 121565063413. The next prime is 121565063423. The reversal of 121565063416 is 614360565121.

It is a happy number.

It is a super-2 number, since 2×121565063416² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121565063413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71006775 + ... + 71008486.

Almost surely, 2^121565063416 is an apocalyptic number.

It is an amenable number.

121565063416 is a deficient number, since it is larger than the sum of its proper divisors (108499661024).

121565063416 is a wasteful number, since it uses less digits than its factorization.

121565063416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142015374 (or 142015370 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 121565063416 in words is "one hundred twenty-one billion, five hundred sixty-five million, sixty-three thousand, four hundred sixteen".