121011000100200 has 240 divisors, whose sum is σ = 480330435768480. Its totient is φ = 27659657139840.

The previous prime is 121011000100139. The next prime is 121011000100213. The reversal of 121011000100200 is 2001000110121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 533444802 + ... + 533671601.

It is an arithmetic number, because the mean of its divisors is an integer number (2001376815702).

Almost surely, 2^{121011000100200} is an apocalyptic number.

121011000100200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121011000100200 is an abundant number, since it is smaller than the sum of its proper divisors (359319435668280).

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

121011000100200 is a wasteful number, since it uses less digits than its factorization.

121011000100200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067116438 (or 1067116420 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 121011000100200 its reverse (2001000110121), we get a palindrome (123012000210321).

The spelling of 121011000100200 in words is "one hundred twenty-one trillion, eleven billion, one hundred thousand, two hundred".