121210969600 has 480 divisors, whose sum is σ = 355104414720. Its totient is φ = 40143912960.

The previous prime is 121210969591. The next prime is 121210969601. The reversal of 121210969600 is 6969012121.

It is a self number, because there is not a number n which added to its sum of digits gives 121210969600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210969601) 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, 450598266 + ... + 450598534.

It is an arithmetic number, because the mean of its divisors is an integer number (739800864).

Almost surely, 2^121210969600 is an apocalyptic number.

121210969600 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 121210969600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177552207360).

121210969600 is an abundant number, since it is smaller than the sum of its proper divisors (233893445120).

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

121210969600 is a wasteful number, since it uses less digits than its factorization.

121210969600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458 (or 437 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 37.

The spelling of 121210969600 in words is "one hundred twenty-one billion, two hundred ten million, nine hundred sixty-nine thousand, six hundred".