222100122001021 has 8 divisors (see below), whose sum is σ = 244689963393888. Its totient is φ = 199910100810000.

The previous prime is 222100122000917. The next prime is 222100122001027. The reversal of 222100122001021 is 120100221001222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 222100122001021 - 2³⁷ = 221962683047549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222100122000986 and 222100122001004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222100122001027) 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 7 ways as a sum of consecutive naturals, for example, 99955049295 + ... + 99955051516.

It is an arithmetic number, because the mean of its divisors is an integer number (30586245424236).

Almost surely, 2^{222100122001021} is an apocalyptic number.

It is an amenable number.

222100122001021 is a deficient number, since it is larger than the sum of its proper divisors (22589841392867).

222100122001021 is a wasteful number, since it uses less digits than its factorization.

222100122001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199910100923.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222100122001021 its reverse (120100221001222), we get a palindrome (342200343002243).

The spelling of 222100122001021 in words is "two hundred twenty-two trillion, one hundred billion, one hundred twenty-two million, one thousand, twenty-one".