121001120221100 has 72 divisors (see below), whose sum is σ = 300094357419360. Its totient is φ = 41484497541120.

The previous prime is 121001120220949. The next prime is 121001120221117. The reversal of 121001120221100 is 1122021100121.

It is a super-2 number, since 2×121001120221100² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14889866 + ... + 21533934.

It is an arithmetic number, because the mean of its divisors is an integer number (4167977186380).

Almost surely, 2^{121001120221100} is an apocalyptic number.

121001120221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121001120221100 is an abundant number, since it is smaller than the sum of its proper divisors (179093237198260).

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

121001120221100 is a wasteful number, since it uses less digits than its factorization.

121001120221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6670107 (or 6670100 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121001120221100 its reverse (1122021100121), we get a palindrome (122123141321221).

The spelling of 121001120221100 in words is "one hundred twenty-one trillion, one billion, one hundred twenty million, two hundred twenty-one thousand, one hundred".