121656532 has 6 divisors (see below), whose sum is σ = 212898938. Its totient is φ = 60828264.

The previous prime is 121656529. The next prime is 121656533. The reversal of 121656532 is 235656121.

It can be written as a sum of positive squares in only one way, i.e., 121088016 + 568516 = 11004^2 + 754^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121656494 and 121656503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121656533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15207063 + ... + 15207070.

Almost surely, 2^121656532 is an apocalyptic number.

It is an amenable number.

121656532 is a deficient number, since it is larger than the sum of its proper divisors (91242406).

121656532 is a wasteful number, since it uses less digits than its factorization.

121656532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30414137 (or 30414135 counting only the distinct ones).

The product of its digits is 10800, while the sum is 31.

The square root of 121656532 is about 11029.8019927830. The cubic root of 121656532 is about 495.5016945252.

The spelling of 121656532 in words is "one hundred twenty-one million, six hundred fifty-six thousand, five hundred thirty-two".