121602150556 has 12 divisors (see below), whose sum is σ = 212834391840. Its totient is φ = 60792324320.

The previous prime is 121602150503. The next prime is 121602150581. The reversal of 121602150556 is 655051206121.

It is a super-2 number, since 2×121602150556² (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, 2156425 + ... + 2212096.

It is an arithmetic number, because the mean of its divisors is an integer number (17736199320).

Almost surely, 2^121602150556 is an apocalyptic number.

It is an amenable number.

121602150556 is a deficient number, since it is larger than the sum of its proper divisors (91232241284).

121602150556 is a wasteful number, since it uses less digits than its factorization.

121602150556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4375484 (or 4375482 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 34.

Adding to 121602150556 its reverse (655051206121), we get a palindrome (776653356677).

The spelling of 121602150556 in words is "one hundred twenty-one billion, six hundred two million, one hundred fifty thousand, five hundred fifty-six".