21122160211 has 2 divisors, whose sum is σ = 21122160212. Its totient is φ = 21122160210.

The previous prime is 21122160203. The next prime is 21122160277. The reversal of 21122160211 is 11206122112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21122160211 - 2³ = 21122160203 is a prime.

It is a super-2 number, since 2×21122160211² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21122160011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10561080105 + 10561080106.

It is an arithmetic number, because the mean of its divisors is an integer number (10561080106).

Almost surely, 2^21122160211 is an apocalyptic number.

21122160211 is a deficient number, since it is larger than the sum of its proper divisors (1).

21122160211 is an equidigital number, since it uses as much as digits as its factorization.

21122160211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 21122160211 its reverse (11206122112), we get a palindrome (32328282323).

The spelling of 21122160211 in words is "twenty-one billion, one hundred twenty-two million, one hundred sixty thousand, two hundred eleven".