21112002211207 has 2 divisors, whose sum is σ = 21112002211208. Its totient is φ = 21112002211206.

The previous prime is 21112002211151. The next prime is 21112002211211. The reversal of 21112002211207 is 70211220021112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21112002211207 - 2²³ = 21111993822599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21112002211217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556001105603 + 10556001105604.

It is an arithmetic number, because the mean of its divisors is an integer number (10556001105604).

Almost surely, 2^{21112002211207} is an apocalyptic number.

21112002211207 is a deficient number, since it is larger than the sum of its proper divisors (1).

21112002211207 is an equidigital number, since it uses as much as digits as its factorization.

21112002211207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 21112002211207 its reverse (70211220021112), we get a palindrome (91323222232319).

The spelling of 21112002211207 in words is "twenty-one trillion, one hundred twelve billion, two million, two hundred eleven thousand, two hundred seven".