121112222101 has 16 divisors (see below), whose sum is σ = 143262483840. Its totient is φ = 101307032640.

The previous prime is 121112222081. The next prime is 121112222107. The reversal of 121112222101 is 101222211121.

It is a cyclic number.

It is not a de Polignac number, because 121112222101 - 2¹⁵ = 121112189333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121112222107) 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, 10653730 + ... + 10665091.

It is an arithmetic number, because the mean of its divisors is an integer number (8953905240).

Almost surely, 2^121112222101 is an apocalyptic number.

It is an amenable number.

121112222101 is a deficient number, since it is larger than the sum of its proper divisors (22150261739).

121112222101 is a wasteful number, since it uses less digits than its factorization.

121112222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21318876.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121112222101 its reverse (101222211121), we get a palindrome (222334433222).

The spelling of 121112222101 in words is "one hundred twenty-one billion, one hundred twelve million, two hundred twenty-two thousand, one hundred one".