221050051139 has 2 divisors, whose sum is σ = 221050051140. Its totient is φ = 221050051138.

The previous prime is 221050051099. The next prime is 221050051297. The reversal of 221050051139 is 931150050122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221050051139 is a prime.

It is not a weakly prime, because it can be changed into another prime (221050051039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110525025569 + 110525025570.

It is an arithmetic number, because the mean of its divisors is an integer number (110525025570).

Almost surely, 2^221050051139 is an apocalyptic number.

221050051139 is a deficient number, since it is larger than the sum of its proper divisors (1).

221050051139 is an equidigital number, since it uses as much as digits as its factorization.

221050051139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 29.

The spelling of 221050051139 in words is "two hundred twenty-one billion, fifty million, fifty-one thousand, one hundred thirty-nine".