121111010122201 has 16 divisors (see below), whose sum is σ = 133443533478528. Its totient is φ = 108999125712000.

The previous prime is 121111010122177. The next prime is 121111010122253. The reversal of 121111010122201 is 102221010111121.

It is a cyclic number.

It is not a de Polignac number, because 121111010122201 - 2⁵ = 121111010122169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121111010822201) 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, 4535836 + ... + 16210978.

It is an arithmetic number, because the mean of its divisors is an integer number (8340220842408).

Almost surely, 2^{121111010122201} is an apocalyptic number.

121111010122201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121111010122201 is a deficient number, since it is larger than the sum of its proper divisors (12332523356327).

121111010122201 is a wasteful number, since it uses less digits than its factorization.

121111010122201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11684592.

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

Adding to 121111010122201 its reverse (102221010111121), we get a palindrome (223332020233322).

It can be divided in two parts, 1211110 and 10122201, that added together give a palindrome (11333311).

The spelling of 121111010122201 in words is "one hundred twenty-one trillion, one hundred eleven billion, ten million, one hundred twenty-two thousand, two hundred one".