2221133977 has 2 divisors, whose sum is σ = 2221133978. Its totient is φ = 2221133976.

The previous prime is 2221133969. The next prime is 2221133987. The reversal of 2221133977 is 7793311222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2207026441 + 14107536 = 46979^2 + 3756^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221133977 - 2³ = 2221133969 is a prime.

It is a super-2 number, since 2×2221133977² = 9866872287567673058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2221133917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110566988 + 1110566989.

It is an arithmetic number, because the mean of its divisors is an integer number (1110566989).

Almost surely, 2^2221133977 is an apocalyptic number.

It is an amenable number.

2221133977 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221133977 is an equidigital number, since it uses as much as digits as its factorization.

2221133977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 37.

The square root of 2221133977 is about 47128.9080819830. The cubic root of 2221133977 is about 1304.7428288077.

The spelling of 2221133977 in words is "two billion, two hundred twenty-one million, one hundred thirty-three thousand, nine hundred seventy-seven".