121652221502 has 48 divisors (see below), whose sum is σ = 219014228160. Its totient is φ = 50505279552.

The previous prime is 121652221489. The next prime is 121652221513. The reversal of 121652221502 is 205122256121.

It is a happy number.

It is a super-2 number, since 2×121652221502² (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 23 ways as a sum of consecutive naturals, for example, 262088 + ... + 558564.

It is an arithmetic number, because the mean of its divisors is an integer number (4562796420).

Almost surely, 2^121652221502 is an apocalyptic number.

121652221502 is a deficient number, since it is larger than the sum of its proper divisors (97362006658).

121652221502 is a wasteful number, since it uses less digits than its factorization.

121652221502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296625 (or 296618 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 121652221502 its reverse (205122256121), we get a palindrome (326774477623).

The spelling of 121652221502 in words is "one hundred twenty-one billion, six hundred fifty-two million, two hundred twenty-one thousand, five hundred two".