21222210210139 has 2 divisors, whose sum is σ = 21222210210140. Its totient is φ = 21222210210138.

The previous prime is 21222210210029. The next prime is 21222210210239. The reversal of 21222210210139 is 93101201222212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21222210210139 - 2³¹ = 21220062726491 is a prime.

It is not a weakly prime, because it can be changed into another prime (21222210210239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611105105069 + 10611105105070.

It is an arithmetic number, because the mean of its divisors is an integer number (10611105105070).

Almost surely, 2^{21222210210139} is an apocalyptic number.

21222210210139 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222210210139 is an equidigital number, since it uses as much as digits as its factorization.

21222210210139 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 21222210210139 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred ten million, two hundred ten thousand, one hundred thirty-nine".