121022274312 has 160 divisors (see below), whose sum is σ = 341211360600. Its totient is φ = 40075554816.

The previous prime is 121022274301. The next prime is 121022274319. The reversal of 121022274312 is 213472220121.

It is a happy number.

121022274312 is a `hidden beast` number, since 1 + 2 + 1 + 0 + 2 + 227 + 431 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 71228136996 + 49794137316 = 266886^2 + 223146^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (121022274319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 72511014 + ... + 72512682.

Almost surely, 2^121022274312 is an apocalyptic number.

121022274312 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 121022274312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170605680300).

121022274312 is an abundant number, since it is smaller than the sum of its proper divisors (220189086288).

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

121022274312 is a wasteful number, since it uses less digits than its factorization.

121022274312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357 (or 2344 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

Adding to 121022274312 its reverse (213472220121), we get a palindrome (334494494433).

The spelling of 121022274312 in words is "one hundred twenty-one billion, twenty-two million, two hundred seventy-four thousand, three hundred twelve".