222001121971 has 2 divisors, whose sum is σ = 222001121972. Its totient is φ = 222001121970.

The previous prime is 222001121957. The next prime is 222001122023. The reversal of 222001121971 is 179121100222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222001121971 - 2¹⁷ = 222000990899 is a prime.

It is not a weakly prime, because it can be changed into another prime (222001121171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111000560985 + 111000560986.

It is an arithmetic number, because the mean of its divisors is an integer number (111000560986).

Almost surely, 2^222001121971 is an apocalyptic number.

222001121971 is a deficient number, since it is larger than the sum of its proper divisors (1).

222001121971 is an equidigital number, since it uses as much as digits as its factorization.

222001121971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 28.

The spelling of 222001121971 in words is "two hundred twenty-two billion, one million, one hundred twenty-one thousand, nine hundred seventy-one".