121402655662 has 16 divisors (see below), whose sum is σ = 197518813632. Its totient is φ = 55737230080.

The previous prime is 121402655623. The next prime is 121402655677. The reversal of 121402655662 is 266556204121.

It is a happy number.

It is a super-2 number, since 2×121402655662² (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 7 ways as a sum of consecutive naturals, for example, 43543318 + ... + 43546105.

It is an arithmetic number, because the mean of its divisors is an integer number (12344925852).

Almost surely, 2^121402655662 is an apocalyptic number.

121402655662 is a deficient number, since it is larger than the sum of its proper divisors (76116157970).

121402655662 is a wasteful number, since it uses less digits than its factorization.

121402655662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87089483.

The product of its (nonzero) digits is 172800, while the sum is 40.

Adding to 121402655662 its reverse (266556204121), we get a palindrome (387958859783).

The spelling of 121402655662 in words is "one hundred twenty-one billion, four hundred two million, six hundred fifty-five thousand, six hundred sixty-two".