121123221101100 has 108 divisors (see below), whose sum is σ = 389914926701664. Its totient is φ = 31426565466240.

The previous prime is 121123221101059. The next prime is 121123221101143. The reversal of 121123221101100 is 1101122321121.

It is a happy number.

121123221101100 is a `hidden beast` number, since 1 + 211 + 232 + 2 + 110 + 110 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1818633684 + ... + 1818700283.

Almost surely, 2^{121123221101100} is an apocalyptic number.

121123221101100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121123221101100 is an abundant number, since it is smaller than the sum of its proper divisors (268791705600564).

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

121123221101100 is a wasteful number, since it uses less digits than its factorization.

121123221101100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3637334024 (or 3637334014 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 121123221101100 its reverse (1101122321121), we get a palindrome (122224343422221).

The spelling of 121123221101100 in words is "one hundred twenty-one trillion, one hundred twenty-three billion, two hundred twenty-one million, one hundred one thousand, one hundred".