121100201400 has 48 divisors (see below), whose sum is σ = 375410626200. Its totient is φ = 32293386880.

The previous prime is 121100201357. The next prime is 121100201401. The reversal of 121100201400 is 4102001121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121100201401) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 100916235 + ... + 100917434.

Almost surely, 2^121100201400 is an apocalyptic number.

121100201400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121100201400 is an abundant number, since it is smaller than the sum of its proper divisors (254310424800).

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

121100201400 is a wasteful number, since it uses less digits than its factorization.

121100201400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201833688 (or 201833679 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121100201400 its reverse (4102001121), we get a palindrome (125202202521).

The spelling of 121100201400 in words is "one hundred twenty-one billion, one hundred million, two hundred one thousand, four hundred".