121120012222100 has 72 divisors (see below), whose sum is σ = 282210632238528. Its totient is φ = 44955895129600.

The previous prime is 121120012222073. The next prime is 121120012222123. The reversal of 121120012222100 is 1222210021121.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 501619202 + ... + 501860601.

It is an arithmetic number, because the mean of its divisors is an integer number (3919592114424).

Almost surely, 2^{121120012222100} is an apocalyptic number.

121120012222100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121120012222100 is an abundant number, since it is smaller than the sum of its proper divisors (161090620016428).

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

121120012222100 is a wasteful number, since it uses less digits than its factorization.

121120012222100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003479905 (or 1003479898 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121120012222100 its reverse (1222210021121), we get a palindrome (122342222243221).

The spelling of 121120012222100 in words is "one hundred twenty-one trillion, one hundred twenty billion, twelve million, two hundred twenty-two thousand, one hundred".