212002162109 has 2 divisors, whose sum is σ = 212002162110. Its totient is φ = 212002162108.

The previous prime is 212002162067. The next prime is 212002162121. The reversal of 212002162109 is 901261200212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211972764025 + 29398084 = 460405^2 + 5422^2 .

It is a cyclic number.

It is not a de Polignac number, because 212002162109 - 2³² = 207707194813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212002162139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106001081054 + 106001081055.

It is an arithmetic number, because the mean of its divisors is an integer number (106001081055).

Almost surely, 2^212002162109 is an apocalyptic number.

It is an amenable number.

212002162109 is a deficient number, since it is larger than the sum of its proper divisors (1).

212002162109 is an equidigital number, since it uses as much as digits as its factorization.

212002162109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 212002162109 in words is "two hundred twelve billion, two million, one hundred sixty-two thousand, one hundred nine".