20020122211 has 2 divisors, whose sum is σ = 20020122212. Its totient is φ = 20020122210.

The previous prime is 20020122173. The next prime is 20020122271. The reversal of 20020122211 is 11222102002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20020122211 - 2⁹ = 20020121699 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20020122191 and 20020122200.

It is not a weakly prime, because it can be changed into another prime (20020122271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010061105 + 10010061106.

It is an arithmetic number, because the mean of its divisors is an integer number (10010061106).

Almost surely, 2^20020122211 is an apocalyptic number.

20020122211 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020122211 is an equidigital number, since it uses as much as digits as its factorization.

20020122211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20020122211 its reverse (11222102002), we get a palindrome (31242224213).

The spelling of 20020122211 in words is "twenty billion, twenty million, one hundred twenty-two thousand, two hundred eleven".