121072700 has 72 divisors (see below), whose sum is σ = 301876512. Its totient is φ = 41287680.

The previous prime is 121072619. The next prime is 121072717. The reversal of 121072700 is 7270121.

121072700 = T₂₃₁ + T₂₃₂ + ... + T₉₀₃.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 179564 + ... + 180236.

Almost surely, 2^121072700 is an apocalyptic number.

121072700 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 121072700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150938256).

121072700 is an abundant number, since it is smaller than the sum of its proper divisors (180803812).

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

121072700 is a wasteful number, since it uses less digits than its factorization.

121072700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951 (or 944 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 20.

The square root of 121072700 is about 11003.3040492390. The cubic root of 121072700 is about 494.7077824973.

The spelling of 121072700 in words is "one hundred twenty-one million, seventy-two thousand, seven hundred".