222021953 has 2 divisors, whose sum is σ = 222021954. Its totient is φ = 222021952.

The previous prime is 222021931. The next prime is 222021971. The reversal of 222021953 is 359120222.

222021953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168688144 + 53333809 = 12988^2 + 7303^2 .

It is a cyclic number.

It is not a de Polignac number, because 222021953 - 2⁶ = 222021889 is a prime.

It is a super-2 number, since 2×222021953² = 98587495227868418, which contains 22 as substring.

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, 111010976 + 111010977.

It is an arithmetic number, because the mean of its divisors is an integer number (111010977).

Almost surely, 2^222021953 is an apocalyptic number.

It is an amenable number.

222021953 is a deficient number, since it is larger than the sum of its proper divisors (1).

222021953 is an equidigital number, since it uses as much as digits as its factorization.

222021953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 222021953 is about 14900.4011019838. The cubic root of 222021953 is about 605.5248529256.

The spelling of 222021953 in words is "two hundred twenty-two million, twenty-one thousand, nine hundred fifty-three".