121452000000 has 504 divisors, whose sum is σ = 419174322000. Its totient is φ = 31180800000.

The previous prime is 121451999969. The next prime is 121452000017. The reversal of 121452000000 is 254121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 347999826 + ... + 348000174.

Almost surely, 2^121452000000 is an apocalyptic number.

121452000000 is a gapful number since it is divisible by the number (10) 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 121452000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209587161000).

121452000000 is an abundant number, since it is smaller than the sum of its proper divisors (297722322000).

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

121452000000 is an frugal number, since it uses more digits than its factorization.

121452000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

Adding to 121452000000 its reverse (254121), we get a palindrome (121452254121).

It can be divided in two parts, 12 and 1452000000, that multiplied together give a square (17424000000 = 132000²).

The spelling of 121452000000 in words is "one hundred twenty-one billion, four hundred fifty-two million", and thus it is an aban number.