21110201220139 has 2 divisors, whose sum is σ = 21110201220140. Its totient is φ = 21110201220138.

The previous prime is 21110201220127. The next prime is 21110201220187. The reversal of 21110201220139 is 93102210201112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21110201220139 - 2⁷ = 21110201220011 is a prime.

It is not a weakly prime, because it can be changed into another prime (21110201220539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555100610069 + 10555100610070.

It is an arithmetic number, because the mean of its divisors is an integer number (10555100610070).

Almost surely, 2^{21110201220139} is an apocalyptic number.

21110201220139 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110201220139 is an equidigital number, since it uses as much as digits as its factorization.

21110201220139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 21110201220139 in words is "twenty-one trillion, one hundred ten billion, two hundred one million, two hundred twenty thousand, one hundred thirty-nine".