121504221244 has 48 divisors (see below), whose sum is σ = 268490170368. Its totient is φ = 46879227648.

The previous prime is 121504221239. The next prime is 121504221283. The reversal of 121504221244 is 442122405121.

It is a super-2 number, since 2×121504221244² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5538204 + ... + 5560099.

It is an arithmetic number, because the mean of its divisors is an integer number (5593545216).

Almost surely, 2^121504221244 is an apocalyptic number.

121504221244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121504221244 is an abundant number, since it is smaller than the sum of its proper divisors (146985949124).

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

121504221244 is a wasteful number, since it uses less digits than its factorization.

121504221244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11098354 (or 11098352 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

Adding to 121504221244 its reverse (442122405121), we get a palindrome (563626626365).

The spelling of 121504221244 in words is "one hundred twenty-one billion, five hundred four million, two hundred twenty-one thousand, two hundred forty-four".