121011222111001 has 16 divisors (see below), whose sum is σ = 127140765050880. Its totient is φ = 114956005222080.

The previous prime is 121011222110929. The next prime is 121011222111011. The reversal of 121011222111001 is 100111222110121.

It is a cyclic number.

It is not a de Polignac number, because 121011222111001 - 2⁹ = 121011222110489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121011222111011) 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, 19775586 + ... + 25161403.

It is an arithmetic number, because the mean of its divisors is an integer number (7946297815680).

Almost surely, 2^{121011222111001} is an apocalyptic number.

It is an amenable number.

121011222111001 is a deficient number, since it is larger than the sum of its proper divisors (6129542939879).

121011222111001 is a wasteful number, since it uses less digits than its factorization.

121011222111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44937816.

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

Adding to 121011222111001 its reverse (100111222110121), we get a palindrome (221122444221122).

The spelling of 121011222111001 in words is "one hundred twenty-one trillion, eleven billion, two hundred twenty-two million, one hundred eleven thousand, one".