121021121001100 has 36 divisors (see below), whose sum is σ = 262618231824424. Its totient is φ = 48408006142080.

The previous prime is 121021121001097. The next prime is 121021121001127. The reversal of 121021121001100 is 1100121120121.

It is a happy number.

It is a super-2 number, since 2×121021121001100² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5583352 + ... + 16529248.

Almost surely, 2^{121021121001100} is an apocalyptic number.

121021121001100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121021121001100 is an abundant number, since it is smaller than the sum of its proper divisors (141597110823324).

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

121021121001100 is a wasteful number, since it uses less digits than its factorization.

121021121001100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11056474 (or 11056467 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121021121001100 its reverse (1100121120121), we get a palindrome (122121242121221).

The spelling of 121021121001100 in words is "one hundred twenty-one trillion, twenty-one billion, one hundred twenty-one million, one thousand, one hundred".