20111230233139 has 2 divisors, whose sum is σ = 20111230233140. Its totient is φ = 20111230233138.

The previous prime is 20111230233121. The next prime is 20111230233161. The reversal of 20111230233139 is 93133203211102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20111230233139 - 2¹⁵ = 20111230200371 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20111230233139.

It is not a weakly prime, because it can be changed into another prime (20111231233139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055615116569 + 10055615116570.

It is an arithmetic number, because the mean of its divisors is an integer number (10055615116570).

Almost surely, 2^{20111230233139} is an apocalyptic number.

20111230233139 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111230233139 is an equidigital number, since it uses as much as digits as its factorization.

20111230233139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 31.

The spelling of 20111230233139 in words is "twenty trillion, one hundred eleven billion, two hundred thirty million, two hundred thirty-three thousand, one hundred thirty-nine".