121240700 has 108 divisors (see below), whose sum is σ = 310214520. Its totient is φ = 41005440.

The previous prime is 121240699. The next prime is 121240711. The reversal of 121240700 is 7042121.

121240700 = T₂₂₀₀ + T₂₂₀₁ + ... + T₂₂₄₈.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 533987 + ... + 534213.

Almost surely, 2^121240700 is an apocalyptic number.

121240700 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 121240700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155107260).

121240700 is an abundant number, since it is smaller than the sum of its proper divisors (188973820).

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

121240700 is a wasteful number, since it uses less digits than its factorization.

121240700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 350 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 121240700 is about 11010.9354734282. The cubic root of 121240700 is about 494.9364949310.

Adding to 121240700 its reverse (7042121), we get a palindrome (128282821).

The spelling of 121240700 in words is "one hundred twenty-one million, two hundred forty thousand, seven hundred".