121226490000 has 2000 divisors, whose sum is σ = 585921695040. Its totient is φ = 23708160000.

The previous prime is 121226489947. The next prime is 121226490023. The reversal of 121226490000 is 94622121.

121226490000 is a `hidden beast` number, since 1 + 2 + 12 + 2 + 649 + 0 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (2000).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 399 ways as a sum of consecutive naturals, for example, 7130969992 + ... + 7130970008.

Almost surely, 2^121226490000 is an apocalyptic number.

121226490000 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 121226490000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292960847520).

121226490000 is an abundant number, since it is smaller than the sum of its proper divisors (464695205040).

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

121226490000 is an equidigital number, since it uses as much as digits as its factorization.

121226490000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 45 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 121226490000 in words is "one hundred twenty-one billion, two hundred twenty-six million, four hundred ninety thousand".