211010022121 has 2 divisors, whose sum is σ = 211010022122. Its totient is φ = 211010022120.

The previous prime is 211010022089. The next prime is 211010022149. The reversal of 211010022121 is 121220010112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141978240000 + 69031782121 = 376800^2 + 262739^2 .

It is a cyclic number.

It is not a de Polignac number, because 211010022121 - 2⁵ = 211010022089 is a prime.

It is not a weakly prime, because it can be changed into another prime (211010022221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105505011060 + 105505011061.

It is an arithmetic number, because the mean of its divisors is an integer number (105505011061).

Almost surely, 2^211010022121 is an apocalyptic number.

It is an amenable number.

211010022121 is a deficient number, since it is larger than the sum of its proper divisors (1).

211010022121 is an equidigital number, since it uses as much as digits as its factorization.

211010022121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 211010022121 its reverse (121220010112), we get a palindrome (332230032233).

The spelling of 211010022121 in words is "two hundred eleven billion, ten million, twenty-two thousand, one hundred twenty-one".