221200002139 has 2 divisors, whose sum is σ = 221200002140. Its totient is φ = 221200002138.

The previous prime is 221200002103. The next prime is 221200002151. The reversal of 221200002139 is 931200002122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221200002139 - 2²¹ = 221197904987 is a prime.

It is not a weakly prime, because it can be changed into another prime (221200002839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110600001069 + 110600001070.

It is an arithmetic number, because the mean of its divisors is an integer number (110600001070).

Almost surely, 2^221200002139 is an apocalyptic number.

221200002139 is a deficient number, since it is larger than the sum of its proper divisors (1).

221200002139 is an equidigital number, since it uses as much as digits as its factorization.

221200002139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The spelling of 221200002139 in words is "two hundred twenty-one billion, two hundred million, two thousand, one hundred thirty-nine".