2122120201639 has 2 divisors, whose sum is σ = 2122120201640. Its totient is φ = 2122120201638.

The previous prime is 2122120201637. The next prime is 2122120201693. The reversal of 2122120201639 is 9361020212212.

Together with next prime (2122120201693) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2122120201639 - 2¹ = 2122120201637 is a prime.

Together with 2122120201637, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2122120201639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122120201637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061060100819 + 1061060100820.

It is an arithmetic number, because the mean of its divisors is an integer number (1061060100820).

Almost surely, 2^{2122120201639} is an apocalyptic number.

2122120201639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122120201639 is an equidigital number, since it uses as much as digits as its factorization.

2122120201639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 2122120201639 in words is "two trillion, one hundred twenty-two billion, one hundred twenty million, two hundred one thousand, six hundred thirty-nine".