121212480 has 112 divisors (see below), whose sum is σ = 397361664. Its totient is φ = 31272960.

The previous prime is 121212479. The next prime is 121212493. The reversal of 121212480 is 84212121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27724 + ... + 31796.

It is an arithmetic number, because the mean of its divisors is an integer number (3547872).

Almost surely, 2^121212480 is an apocalyptic number.

121212480 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 121212480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198680832).

121212480 is an abundant number, since it is smaller than the sum of its proper divisors (276149184).

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

121212480 is a wasteful number, since it uses less digits than its factorization.

121212480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4124 (or 4114 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 121212480 is about 11009.6539455153. The cubic root of 121212480 is about 494.8980914584.

The spelling of 121212480 in words is "one hundred twenty-one million, two hundred twelve thousand, four hundred eighty".