212213212139 has 2 divisors, whose sum is σ = 212213212140. Its totient is φ = 212213212138.

The previous prime is 212213212129. The next prime is 212213212153. The reversal of 212213212139 is 931212312212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212213212139 is a prime.

It is not a weakly prime, because it can be changed into another prime (212213212129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106106606069 + 106106606070.

It is an arithmetic number, because the mean of its divisors is an integer number (106106606070).

Almost surely, 2^212213212139 is an apocalyptic number.

212213212139 is a deficient number, since it is larger than the sum of its proper divisors (1).

212213212139 is an equidigital number, since it uses as much as digits as its factorization.

212213212139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 29.

The spelling of 212213212139 in words is "two hundred twelve billion, two hundred thirteen million, two hundred twelve thousand, one hundred thirty-nine".