21122101002263 has 2 divisors, whose sum is σ = 21122101002264. Its totient is φ = 21122101002262.

The previous prime is 21122101002239. The next prime is 21122101002271. The reversal of 21122101002263 is 36220010122112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21122101002263 - 2⁴² = 16724054491159 is a prime.

It is a super-2 number, since 2×21122101002263² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21122101002463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10561050501131 + 10561050501132.

It is an arithmetic number, because the mean of its divisors is an integer number (10561050501132).

Almost surely, 2^{21122101002263} is an apocalyptic number.

21122101002263 is a deficient number, since it is larger than the sum of its proper divisors (1).

21122101002263 is an equidigital number, since it uses as much as digits as its factorization.

21122101002263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 21122101002263 its reverse (36220010122112), we get a palindrome (57342111124375).

The spelling of 21122101002263 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred one million, two thousand, two hundred sixty-three".