121101222120012 has 72 divisors (see below), whose sum is σ = 307200603528000. Its totient is φ = 40224333996288.

The previous prime is 121101222119981. The next prime is 121101222120071. The reversal of 121101222120012 is 210021222101121.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 15441664 + ... + 21923672.

It is an arithmetic number, because the mean of its divisors is an integer number (4266675049000).

Almost surely, 2^{121101222120012} is an apocalyptic number.

121101222120012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121101222120012 is an abundant number, since it is smaller than the sum of its proper divisors (186099381407988).

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

121101222120012 is a wasteful number, since it uses less digits than its factorization.

121101222120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6483855 (or 6483850 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121101222120012 its reverse (210021222101121), we get a palindrome (331122444221133).

The spelling of 121101222120012 in words is "one hundred twenty-one trillion, one hundred one billion, two hundred twenty-two million, one hundred twenty thousand, twelve".