2471221139 has 4 divisors (see below), whose sum is σ = 2471812200. Its totient is φ = 2470630080.

The previous prime is 2471221121. The next prime is 2471221169. The reversal of 2471221139 is 9311221742.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2471221139 - 2²⁰ = 2470172563 is a prime.

It is a super-2 number, since 2×2471221139² = 12213867835680914642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2471221169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289214 + ... + 297635.

It is an arithmetic number, because the mean of its divisors is an integer number (617953050).

Almost surely, 2^2471221139 is an apocalyptic number.

2471221139 is a deficient number, since it is larger than the sum of its proper divisors (591061).

2471221139 is an equidigital number, since it uses as much as digits as its factorization.

2471221139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591060.

The product of its digits is 6048, while the sum is 32.

The square root of 2471221139 is about 49711.3783655211. The cubic root of 2471221139 is about 1351.9808395319.

The spelling of 2471221139 in words is "two billion, four hundred seventy-one million, two hundred twenty-one thousand, one hundred thirty-nine".