20111011021139 has 2 divisors, whose sum is σ = 20111011021140. Its totient is φ = 20111011021138.

The previous prime is 20111011021097. The next prime is 20111011021141. The reversal of 20111011021139 is 93112011011102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20111011021139 - 2¹² = 20111011017043 is a prime.

Together with 20111011021141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20111011021939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055505510569 + 10055505510570.

It is an arithmetic number, because the mean of its divisors is an integer number (10055505510570).

Almost surely, 2^{20111011021139} is an apocalyptic number.

20111011021139 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111011021139 is an equidigital number, since it uses as much as digits as its factorization.

20111011021139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 23.

The spelling of 20111011021139 in words is "twenty trillion, one hundred eleven billion, eleven million, twenty-one thousand, one hundred thirty-nine".