222001421893 has 2 divisors, whose sum is σ = 222001421894. Its totient is φ = 222001421892.

The previous prime is 222001421891. The next prime is 222001422059. The reversal of 222001421893 is 398124100222.

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., 138605800804 + 83395621089 = 372298^2 + 288783^2 .

It is a cyclic number.

It is not a de Polignac number, because 222001421893 - 2¹ = 222001421891 is a prime.

Together with 222001421891, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222001421891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111000710946 + 111000710947.

It is an arithmetic number, because the mean of its divisors is an integer number (111000710947).

Almost surely, 2^222001421893 is an apocalyptic number.

It is an amenable number.

222001421893 is a deficient number, since it is larger than the sum of its proper divisors (1).

222001421893 is an equidigital number, since it uses as much as digits as its factorization.

222001421893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 34.

The spelling of 222001421893 in words is "two hundred twenty-two billion, one million, four hundred twenty-one thousand, eight hundred ninety-three".