222021983 has 2 divisors, whose sum is σ = 222021984. Its totient is φ = 222021982.

The previous prime is 222021979. The next prime is 222021997. The reversal of 222021983 is 389120222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222021983 - 2² = 222021979 is a prime.

It is a Chen prime.

It is equal to p_12227726 and since 222021983 and 12227726 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222021923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111010991 + 111010992.

It is an arithmetic number, because the mean of its divisors is an integer number (111010992).

Almost surely, 2^222021983 is an apocalyptic number.

222021983 is a deficient number, since it is larger than the sum of its proper divisors (1).

222021983 is an equidigital number, since it uses as much as digits as its factorization.

222021983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 222021983 is about 14900.4021086681. The cubic root of 222021983 is about 605.5248801988.

It can be divided in two parts, 2220 and 21983, that multiplied together give a triangular number (48802260 = T₉₈₇₉).

The spelling of 222021983 in words is "two hundred twenty-two million, twenty-one thousand, nine hundred eighty-three".