121001221112 has 8 divisors (see below), whose sum is σ = 226877289600. Its totient is φ = 60500610552.

The previous prime is 121001221087. The next prime is 121001221139. The reversal of 121001221112 is 211122100121.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×121001221112² (a number of 23 digits) contains 22 as substring.

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 as a sum of consecutive naturals, namely, 7562576312 + ... + 7562576327.

It is an arithmetic number, because the mean of its divisors is an integer number (28359661200).

Almost surely, 2^121001221112 is an apocalyptic number.

It is an amenable number.

121001221112 is a deficient number, since it is larger than the sum of its proper divisors (105876068488).

121001221112 is a wasteful number, since it uses less digits than its factorization.

121001221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15125152645 (or 15125152641 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121001221112 its reverse (211122100121), we get a palindrome (332123321233).

The spelling of 121001221112 in words is "one hundred twenty-one billion, one million, two hundred twenty-one thousand, one hundred twelve".