201202122139 has 2 divisors, whose sum is σ = 201202122140. Its totient is φ = 201202122138.

The previous prime is 201202122127. The next prime is 201202122151. The reversal of 201202122139 is 931221202102.

It is a balanced prime because it is at equal distance from previous prime (201202122127) and next prime (201202122151).

It is a cyclic number.

It is not a de Polignac number, because 201202122139 - 2¹⁵ = 201202089371 is a prime.

It is not a weakly prime, because it can be changed into another prime (201202122109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100601061069 + 100601061070.

It is an arithmetic number, because the mean of its divisors is an integer number (100601061070).

Almost surely, 2^201202122139 is an apocalyptic number.

201202122139 is a deficient number, since it is larger than the sum of its proper divisors (1).

201202122139 is an equidigital number, since it uses as much as digits as its factorization.

201202122139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 201202122139 in words is "two hundred one billion, two hundred two million, one hundred twenty-two thousand, one hundred thirty-nine".