222102021893 has 2 divisors, whose sum is σ = 222102021894. Its totient is φ = 222102021892.

The previous prime is 222102021887. The next prime is 222102021929. The reversal of 222102021893 is 398120201222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127396883329 + 94705138564 = 356927^2 + 307742^2 .

It is a cyclic number.

It is not a de Polignac number, because 222102021893 - 2⁴ = 222102021877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222102021853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111051010946 + 111051010947.

It is an arithmetic number, because the mean of its divisors is an integer number (111051010947).

Almost surely, 2^222102021893 is an apocalyptic number.

It is an amenable number.

222102021893 is a deficient number, since it is larger than the sum of its proper divisors (1).

222102021893 is an equidigital number, since it uses as much as digits as its factorization.

222102021893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 222102021893 in words is "two hundred twenty-two billion, one hundred two million, twenty-one thousand, eight hundred ninety-three".