121422224 has 80 divisors (see below), whose sum is σ = 297885696. Its totient is φ = 46569600.

The previous prime is 121422187. The next prime is 121422233. The reversal of 121422224 is 422224121.

It is a super-2 number, since 2×121422224² = 29486712962212352, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 121422196 and 121422205.

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, 81809 + ... + 83279.

Almost surely, 2^121422224 is an apocalyptic number.

121422224 is a gapful number since it is divisible by the number (14) 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 121422224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148942848).

121422224 is an abundant number, since it is smaller than the sum of its proper divisors (176463472).

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

121422224 is a wasteful number, since it uses less digits than its factorization.

121422224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564 (or 1558 counting only the distinct ones).

The product of its digits is 512, while the sum is 20.

The square root of 121422224 is about 11019.1752867445. The cubic root of 121422224 is about 495.1833813627.

Adding to 121422224 its product of digits (512), we get a triangular number (121422736 = T₁₅₅₈₃).

Adding to 121422224 its reverse (422224121), we get a palindrome (543646345).

The spelling of 121422224 in words is "one hundred twenty-one million, four hundred twenty-two thousand, two hundred twenty-four".