121441255212 has 48 divisors (see below), whose sum is σ = 286177554432. Its totient is φ = 40079632320.

The previous prime is 121441255207. The next prime is 121441255217. The reversal of 121441255212 is 212552144121.

It is an interprime number because it is at equal distance from previous prime (121441255207) and next prime (121441255217).

It is a super-2 number, since 2×121441255212² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121441255212.

It is not an unprimeable number, because it can be changed into a prime (121441255217) 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, 667138 + ... + 829430.

It is an arithmetic number, because the mean of its divisors is an integer number (5962032384).

Almost surely, 2^121441255212 is an apocalyptic number.

121441255212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121441255212 is an abundant number, since it is smaller than the sum of its proper divisors (164736299220).

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

121441255212 is a wasteful number, since it uses less digits than its factorization.

121441255212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162918 (or 162916 counting only the distinct ones).

The product of its digits is 6400, while the sum is 30.

Adding to 121441255212 its reverse (212552144121), we get a palindrome (333993399333).

The spelling of 121441255212 in words is "one hundred twenty-one billion, four hundred forty-one million, two hundred fifty-five thousand, two hundred twelve".