222101102201021 has 2 divisors, whose sum is σ = 222101102201022. Its totient is φ = 222101102201020.

The previous prime is 222101102200997. The next prime is 222101102201113. The reversal of 222101102201021 is 120102201101222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117492288856996 + 104608813344025 = 10839386^2 + 10227845^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222101102201021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222101102201821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111050551100510 + 111050551100511.

It is an arithmetic number, because the mean of its divisors is an integer number (111050551100511).

Almost surely, 2^{222101102201021} is an apocalyptic number.

It is an amenable number.

222101102201021 is a deficient number, since it is larger than the sum of its proper divisors (1).

222101102201021 is an equidigital number, since it uses as much as digits as its factorization.

222101102201021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 222101102201021 its reverse (120102201101222), we get a palindrome (342203303302243).

The spelling of 222101102201021 in words is "two hundred twenty-two trillion, one hundred one billion, one hundred two million, two hundred one thousand, twenty-one".