100222112012221 has 4 divisors (see below), whose sum is σ = 100725740716000. Its totient is φ = 99718483308444.

The previous prime is 100222112012173. The next prime is 100222112012273. The reversal of 100222112012221 is 122210211222001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100222112012221 - 2¹⁵ = 100222111979453 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 (100222112012621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251814351591 + ... + 251814351988.

It is an arithmetic number, because the mean of its divisors is an integer number (25181435179000).

Almost surely, 2^{100222112012221} is an apocalyptic number.

It is an amenable number.

100222112012221 is a deficient number, since it is larger than the sum of its proper divisors (503628703779).

100222112012221 is an equidigital number, since it uses as much as digits as its factorization.

100222112012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503628703778.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 100222112012221 its reverse (122210211222001), we get a palindrome (222432323234222).

The spelling of 100222112012221 in words is "one hundred trillion, two hundred twenty-two billion, one hundred twelve million, twelve thousand, two hundred twenty-one".