10212222100991 has 2 divisors, whose sum is σ = 10212222100992. Its totient is φ = 10212222100990.

The previous prime is 10212222100967. The next prime is 10212222101009. The reversal of 10212222100991 is 19900122221201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10212222100991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10212222100961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106111050495 + 5106111050496.

It is an arithmetic number, because the mean of its divisors is an integer number (5106111050496).

Almost surely, 2^{10212222100991} is an apocalyptic number.

10212222100991 is a deficient number, since it is larger than the sum of its proper divisors (1).

10212222100991 is an equidigital number, since it uses as much as digits as its factorization.

10212222100991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 32.

It can be divided in two parts, 1021222 and 2100991, that added together give a palindrome (3122213).

The spelling of 10212222100991 in words is "ten trillion, two hundred twelve billion, two hundred twenty-two million, one hundred thousand, nine hundred ninety-one".