121573700 has 36 divisors (see below), whose sum is σ = 266449092. Its totient is φ = 48144000.

The previous prime is 121573693. The next prime is 121573703. The reversal of 121573700 is 7375121.

It can be written as a sum of positive squares in 6 ways, for example, as 4631104 + 116942596 = 2152^2 + 10814^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121573700.

It is not an unprimeable number, because it can be changed into a prime (121573703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4082 + ... + 16118.

Almost surely, 2^121573700 is an apocalyptic number.

121573700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121573700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133224546).

121573700 is an abundant number, since it is smaller than the sum of its proper divisors (144875392).

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

121573700 is a wasteful number, since it uses less digits than its factorization.

121573700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12152 (or 12145 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 121573700 is about 11026.0464355997. The cubic root of 121573700 is about 495.3892119639.

The spelling of 121573700 in words is "one hundred twenty-one million, five hundred seventy-three thousand, seven hundred".