212211661139 has 2 divisors, whose sum is σ = 212211661140. Its totient is φ = 212211661138.

The previous prime is 212211661127. The next prime is 212211661159. The reversal of 212211661139 is 931166112212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212211661139 - 2³⁶ = 143492184403 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212211661099 and 212211661108.

It is not a weakly prime, because it can be changed into another prime (212211661159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106105830569 + 106105830570.

It is an arithmetic number, because the mean of its divisors is an integer number (106105830570).

Almost surely, 2^212211661139 is an apocalyptic number.

212211661139 is a deficient number, since it is larger than the sum of its proper divisors (1).

212211661139 is an equidigital number, since it uses as much as digits as its factorization.

212211661139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 35.

The spelling of 212211661139 in words is "two hundred twelve billion, two hundred eleven million, six hundred sixty-one thousand, one hundred thirty-nine".