121100121012112 has 40 divisors (see below), whose sum is σ = 256237143567840. Its totient is φ = 54986257044480.

The previous prime is 121100121012083. The next prime is 121100121012119. The reversal of 121100121012112 is 211210121001121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (121100121012119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370164198 + ... + 370491205.

It is an arithmetic number, because the mean of its divisors is an integer number (6405928589196).

Almost surely, 2^{121100121012112} is an apocalyptic number.

It is an amenable number.

121100121012112 is an abundant number, since it is smaller than the sum of its proper divisors (135137022555728).

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

121100121012112 is a wasteful number, since it uses less digits than its factorization.

121100121012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740656351 (or 740656345 counting only the distinct ones).

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

Adding to 121100121012112 its reverse (211210121001121), we get a palindrome (332310242013233).

The spelling of 121100121012112 in words is "one hundred twenty-one trillion, one hundred billion, one hundred twenty-one million, twelve thousand, one hundred twelve".