121000110012 has 24 divisors (see below), whose sum is σ = 313703989200. Its totient is φ = 40333369968.

The previous prime is 121000110001. The next prime is 121000110031. The reversal of 121000110012 is 210011000121.

It is a happy number.

It is a super-2 number, since 2×121000110012² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 121000109976 and 121000110003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560185587 + ... + 560185802.

It is an arithmetic number, because the mean of its divisors is an integer number (13070999550).

Almost surely, 2^121000110012 is an apocalyptic number.

121000110012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121000110012 is an abundant number, since it is smaller than the sum of its proper divisors (192703879188).

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

121000110012 is a wasteful number, since it uses less digits than its factorization.

121000110012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120371402 (or 1120371394 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 121000110012 its reverse (210011000121), we get a palindrome (331011110133).

The spelling of 121000110012 in words is "one hundred twenty-one billion, one hundred ten thousand, twelve".