121223311011001 has 4 divisors (see below), whose sum is σ = 121240760753232. Its totient is φ = 121205861268772.

The previous prime is 121223311010987. The next prime is 121223311011109. The reversal of 121223311011001 is 100110113322121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121223311011001 - 2⁵ = 121223311010969 is a prime.

It is a super-2 number, since 2×121223311011001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121223311011001.

It is not an unprimeable number, because it can be changed into a prime (121223311011701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8724860695 + ... + 8724874588.

It is an arithmetic number, because the mean of its divisors is an integer number (30310190188308).

Almost surely, 2^{121223311011001} is an apocalyptic number.

It is an amenable number.

121223311011001 is a deficient number, since it is larger than the sum of its proper divisors (17449742231).

121223311011001 is an equidigital number, since it uses as much as digits as its factorization.

121223311011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17449742230.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 121223311011001 its reverse (100110113322121), we get a palindrome (221333424333122).

The spelling of 121223311011001 in words is "one hundred twenty-one trillion, two hundred twenty-three billion, three hundred eleven million, eleven thousand, one".