121100001222012 has 48 divisors (see below), whose sum is σ = 285679131978240. Its totient is φ = 39923043582528.

The previous prime is 121100001221977. The next prime is 121100001222019. The reversal of 121100001222012 is 210222100001121.

It is a junction number, because it is equal to n+sod(n) for n = 121100001221982 and 121100001222000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121100001222019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62419312 + ... + 64330167.

It is an arithmetic number, because the mean of its divisors is an integer number (5951648582880).

Almost surely, 2^{121100001222012} is an apocalyptic number.

121100001222012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121100001222012 is an abundant number, since it is smaller than the sum of its proper divisors (164579130756228).

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

121100001222012 is a wasteful number, since it uses less digits than its factorization.

121100001222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126750362 (or 126750360 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121100001222012 its reverse (210222100001121), we get a palindrome (331322101223133).

The spelling of 121100001222012 in words is "one hundred twenty-one trillion, one hundred billion, one million, two hundred twenty-two thousand, twelve".