121222101001 has 16 divisors (see below), whose sum is σ = 128460067200. Its totient is φ = 114070439808.

The previous prime is 121222100959. The next prime is 121222101023. The reversal of 121222101001 is 100101222121.

It is a cyclic number.

It is not a de Polignac number, because 121222101001 - 2¹⁷ = 121221969929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121222104001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11715036 + ... + 11725378.

It is an arithmetic number, because the mean of its divisors is an integer number (8028754200).

Almost surely, 2^121222101001 is an apocalyptic number.

It is an amenable number.

121222101001 is a deficient number, since it is larger than the sum of its proper divisors (7237966199).

121222101001 is a wasteful number, since it uses less digits than its factorization.

121222101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14448.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121222101001 its reverse (100101222121), we get a palindrome (221323323122).

The spelling of 121222101001 in words is "one hundred twenty-one billion, two hundred twenty-two million, one hundred one thousand, one".