121001133400 has 96 divisors (see below), whose sum is σ = 328358269440. Its totient is φ = 40603397760.

The previous prime is 121001133397. The next prime is 121001133419. The reversal of 121001133400 is 4331100121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 853662 + ... + 985261.

It is an arithmetic number, because the mean of its divisors is an integer number (3420398640).

Almost surely, 2^121001133400 is an apocalyptic number.

121001133400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121001133400 is an abundant number, since it is smaller than the sum of its proper divisors (207357136040).

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

121001133400 is a wasteful number, since it uses less digits than its factorization.

121001133400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838993 (or 1838984 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 121001133400 its reverse (4331100121), we get a palindrome (125332233521).

The spelling of 121001133400 in words is "one hundred twenty-one billion, one million, one hundred thirty-three thousand, four hundred".