5871122221 has 2 divisors, whose sum is σ = 5871122222. Its totient is φ = 5871122220.

The previous prime is 5871122219. The next prime is 5871122233. The reversal of 5871122221 is 1222211785.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5869245321 + 1876900 = 76611^2 + 1370^2 .

It is a cyclic number.

It is not a de Polignac number, because 5871122221 - 2¹ = 5871122219 is a prime.

It is a super-2 number, since 2×5871122221² = 68940152267839945682, which contains 22 as substring.

Together with 5871122219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5871122251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2935561110 + 2935561111.

It is an arithmetic number, because the mean of its divisors is an integer number (2935561111).

Almost surely, 2^5871122221 is an apocalyptic number.

It is an amenable number.

5871122221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5871122221 is an equidigital number, since it uses as much as digits as its factorization.

5871122221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4480, while the sum is 31.

The square root of 5871122221 is about 76623.2485672593. The cubic root of 5871122221 is about 1804.0159532589.

The spelling of 5871122221 in words is "five billion, eight hundred seventy-one million, one hundred twenty-two thousand, two hundred twenty-one".