212202102019891 has 2 divisors, whose sum is σ = 212202102019892. Its totient is φ = 212202102019890.

The previous prime is 212202102019879. The next prime is 212202102019931. The reversal of 212202102019891 is 198910201202212.

It is an a-pointer prime, because the next prime (212202102019931) can be obtained adding 212202102019891 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212202102019891 - 2¹³ = 212202102011699 is a prime.

It is not a weakly prime, because it can be changed into another prime (212202102019861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106101051009945 + 106101051009946.

It is an arithmetic number, because the mean of its divisors is an integer number (106101051009946).

Almost surely, 2^{212202102019891} is an apocalyptic number.

212202102019891 is a deficient number, since it is larger than the sum of its proper divisors (1).

212202102019891 is an equidigital number, since it uses as much as digits as its factorization.

212202102019891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 40.

The spelling of 212202102019891 in words is "two hundred twelve trillion, two hundred two billion, one hundred two million, nineteen thousand, eight hundred ninety-one".