121110110222100 has 144 divisors (see below), whose sum is σ = 366294209003520. Its totient is φ = 30858598742400.

The previous prime is 121110110222011. The next prime is 121110110222111. The reversal of 121110110222100 is 1222011011121.

It is a happy number.

It is a super-2 number, since 2×121110110222100² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121110110222100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 81686772 + ... + 83156171.

Almost surely, 2^{121110110222100} is an apocalyptic number.

121110110222100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121110110222100 is an abundant number, since it is smaller than the sum of its proper divisors (245184098781420).

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

121110110222100 is a wasteful number, since it uses less digits than its factorization.

121110110222100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164843070 (or 164843063 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121110110222100 its reverse (1222011011121), we get a palindrome (122332121233221).

The spelling of 121110110222100 in words is "one hundred twenty-one trillion, one hundred ten billion, one hundred ten million, two hundred twenty-two thousand, one hundred".