121465213452 has 144 divisors (see below), whose sum is σ = 366093471744. Its totient is φ = 33524928000.

The previous prime is 121465213447. The next prime is 121465213453. The reversal of 121465213452 is 254312564121.

121465213452 is a `hidden beast` number, since 1 + 2 + 146 + 52 + 13 + 452 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (121465213453) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 82324 + ... + 499707.

It is an arithmetic number, because the mean of its divisors is an integer number (2542315776).

Almost surely, 2^121465213452 is an apocalyptic number.

121465213452 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 121465213452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183046735872).

121465213452 is an abundant number, since it is smaller than the sum of its proper divisors (244628258292).

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

121465213452 is a wasteful number, since it uses less digits than its factorization.

121465213452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582100 (or 582095 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

Adding to 121465213452 its reverse (254312564121), we get a palindrome (375777777573).

The spelling of 121465213452 in words is "one hundred twenty-one billion, four hundred sixty-five million, two hundred thirteen thousand, four hundred fifty-two".