222605103626021 has 2 divisors, whose sum is σ = 222605103626022. Its totient is φ = 222605103626020.

The previous prime is 222605103625999. The next prime is 222605103626029. The reversal of 222605103626021 is 120626301506222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209465123868100 + 13139979757921 = 14472910^2 + 3624911^2 .

It is a cyclic number.

It is not a de Polignac number, because 222605103626021 - 2⁴⁶ = 152236359448357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222605103626029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111302551813010 + 111302551813011.

It is an arithmetic number, because the mean of its divisors is an integer number (111302551813011).

Almost surely, 2^{222605103626021} is an apocalyptic number.

It is an amenable number.

222605103626021 is a deficient number, since it is larger than the sum of its proper divisors (1).

222605103626021 is an equidigital number, since it uses as much as digits as its factorization.

222605103626021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 222605103626021 in words is "two hundred twenty-two trillion, six hundred five billion, one hundred three million, six hundred twenty-six thousand, twenty-one".