21301202222087 has 2 divisors, whose sum is σ = 21301202222088. Its totient is φ = 21301202222086.

The previous prime is 21301202222009. The next prime is 21301202222147. The reversal of 21301202222087 is 78022220210312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21301202222087 - 2²⁸ = 21300933786631 is a prime.

It is a super-2 number, since 2×21301202222087² (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 (21301202242087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10650601111043 + 10650601111044.

It is an arithmetic number, because the mean of its divisors is an integer number (10650601111044).

Almost surely, 2^{21301202222087} is an apocalyptic number.

21301202222087 is a deficient number, since it is larger than the sum of its proper divisors (1).

21301202222087 is an equidigital number, since it uses as much as digits as its factorization.

21301202222087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 32.

Adding to 21301202222087 its reverse (78022220210312), we get a palindrome (99323422432399).

The spelling of 21301202222087 in words is "twenty-one trillion, three hundred one billion, two hundred two million, two hundred twenty-two thousand, eighty-seven".