122121384 has 64 divisors (see below), whose sum is σ = 380643840. Its totient is φ = 31719360.

The previous prime is 122121383. The next prime is 122121413. The reversal of 122121384 is 483121221.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (122121383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31194 + ... + 34889.

It is an arithmetic number, because the mean of its divisors is an integer number (5947560).

Almost surely, 2^122121384 is an apocalyptic number.

122121384 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

122121384 is an abundant number, since it is smaller than the sum of its proper divisors (258522456).

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

122121384 is a wasteful number, since it uses less digits than its factorization.

122121384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66110 (or 66106 counting only the distinct ones).

The product of its digits is 768, while the sum is 24.

The square root of 122121384 is about 11050.8544466028. The cubic root of 122121384 is about 496.1319996408.

The spelling of 122121384 in words is "one hundred twenty-two million, one hundred twenty-one thousand, three hundred eighty-four".