121111220101201 has 16 divisors (see below), whose sum is σ = 133900945558848. Its totient is φ = 108625801032000.

The previous prime is 121111220101177. The next prime is 121111220101217. The reversal of 121111220101201 is 102101022111121.

It is a cyclic number.

It is not a de Polignac number, because 121111220101201 - 2⁷ = 121111220101073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121111220101601) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 192284526 + ... + 192913351.

It is an arithmetic number, because the mean of its divisors is an integer number (8368809097428).

Almost surely, 2^{121111220101201} is an apocalyptic number.

121111220101201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121111220101201 is a deficient number, since it is larger than the sum of its proper divisors (12789725457647).

121111220101201 is a wasteful number, since it uses less digits than its factorization.

121111220101201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385198272.

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

Adding to 121111220101201 its reverse (102101022111121), we get a palindrome (223212242212322).

The spelling of 121111220101201 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred twenty million, one hundred one thousand, two hundred one".