222101121222101 has 32 divisors (see below), whose sum is σ = 249570713419776. Its totient is φ = 197552044258800.

The previous prime is 222101121222041. The next prime is 222101121222107. The reversal of 222101121222101 is 101222121101222.

It is a de Polignac number, because none of the positive numbers 2^k-222101121222101 is a prime.

It is a super-2 number, since 2×222101121222101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222101121222107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199063076 + ... + 200175698.

It is an arithmetic number, because the mean of its divisors is an integer number (7799084794368).

Almost surely, 2^{222101121222101} is an apocalyptic number.

It is an amenable number.

222101121222101 is a deficient number, since it is larger than the sum of its proper divisors (27469592197675).

222101121222101 is a wasteful number, since it uses less digits than its factorization.

222101121222101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115894 (or 1115872 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 222101121222101 its reverse (101222121101222), we get a palindrome (323323242323323).

It can be divided in two parts, 222101121 and 222101, that added together give a palindrome (222323222).

The spelling of 222101121222101 in words is "two hundred twenty-two trillion, one hundred one billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred one".