10202122121239 has 2 divisors, whose sum is σ = 10202122121240. Its totient is φ = 10202122121238.

The previous prime is 10202122121179. The next prime is 10202122121293. The reversal of 10202122121239 is 93212122120201.

Together with next prime (10202122121293) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10202122121239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10202122121039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101061060619 + 5101061060620.

It is an arithmetic number, because the mean of its divisors is an integer number (5101061060620).

Almost surely, 2^{10202122121239} is an apocalyptic number.

10202122121239 is a deficient number, since it is larger than the sum of its proper divisors (1).

10202122121239 is an equidigital number, since it uses as much as digits as its factorization.

10202122121239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 10202122121239 in words is "ten trillion, two hundred two billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred thirty-nine".