121663700 has 36 divisors (see below), whose sum is σ = 273120540. Its totient is φ = 46986240.

The previous prime is 121663699. The next prime is 121663739. The reversal of 121663700 is 7366121.

It can be written as a sum of positive squares in 6 ways, for example, as 4937284 + 116726416 = 2222^2 + 10804^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121663700.

It is a congruent number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 18077 + ... + 23876.

Almost surely, 2^121663700 is an apocalyptic number.

121663700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121663700 is an abundant number, since it is smaller than the sum of its proper divisors (151456840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121663700 is a wasteful number, since it uses less digits than its factorization.

121663700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41996 (or 41989 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 121663700 is about 11030.1269258336. The cubic root of 121663700 is about 495.5114259834.

The spelling of 121663700 in words is "one hundred twenty-one million, six hundred sixty-three thousand, seven hundred".