121422312 has 96 divisors (see below), whose sum is σ = 377676000. Its totient is φ = 34853760.

The previous prime is 121422281. The next prime is 121422341. The reversal of 121422312 is 213224121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

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

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, 11014 + ... + 19082.

It is an arithmetic number, because the mean of its divisors is an integer number (3934125).

Almost surely, 2^121422312 is an apocalyptic number.

121422312 is a gapful number since it is divisible by the number (12) 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 121422312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188838000).

121422312 is an abundant number, since it is smaller than the sum of its proper divisors (256253688).

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

121422312 is a wasteful number, since it uses less digits than its factorization.

121422312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8111 (or 8104 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 121422312 is about 11019.1792797830. The cubic root of 121422312 is about 495.1835009897.

Adding to 121422312 its reverse (213224121), we get a palindrome (334646433).

The spelling of 121422312 in words is "one hundred twenty-one million, four hundred twenty-two thousand, three hundred twelve".