2221004197 has 2 divisors, whose sum is σ = 2221004198. Its totient is φ = 2221004196.

The previous prime is 2221004173. The next prime is 2221004209. The reversal of 2221004197 is 7914001222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1985504481 + 235499716 = 44559^2 + 15346^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221004197 - 2¹⁵ = 2220971429 is a prime.

It is a super-2 number, since 2×2221004197² = 9865719286183229618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221004147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110502098 + 1110502099.

It is an arithmetic number, because the mean of its divisors is an integer number (1110502099).

Almost surely, 2^2221004197 is an apocalyptic number.

It is an amenable number.

2221004197 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221004197 is an equidigital number, since it uses as much as digits as its factorization.

2221004197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 2221004197 is about 47127.5311999260. The cubic root of 2221004197 is about 1304.7174164396.

The spelling of 2221004197 in words is "two billion, two hundred twenty-one million, four thousand, one hundred ninety-seven".