222121002112101 has 6 divisors (see below), whose sum is σ = 320841447495270. Its totient is φ = 148080668074728.

The previous prime is 222121002112091. The next prime is 222121002112111. The reversal of 222121002112101 is 101211200121222.

222121002112101 is a `hidden beast` number, since 2 + 221 + 21 + 0 + 0 + 211 + 210 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (222121002112091) and next prime (222121002112111).

It can be written as a sum of positive squares in only one way, i.e., 117107675856900 + 105013326255201 = 10821630^2 + 10247601^2 .

It is not a de Polignac number, because 222121002112101 - 2⁷ = 222121002111973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222121002112111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12340055672886 + ... + 12340055672903.

It is an arithmetic number, because the mean of its divisors is an integer number (53473574582545).

Almost surely, 2^{222121002112101} is an apocalyptic number.

It is an amenable number.

222121002112101 is a deficient number, since it is larger than the sum of its proper divisors (98720445383169).

222121002112101 is a wasteful number, since it uses less digits than its factorization.

222121002112101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24680111345795 (or 24680111345792 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 222121002112101 its reverse (101211200121222), we get a palindrome (323332202233323).

The spelling of 222121002112101 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, two million, one hundred twelve thousand, one hundred one".