20212211011 has 2 divisors, whose sum is σ = 20212211012. Its totient is φ = 20212211010.

The previous prime is 20212211003. The next prime is 20212211023. The reversal of 20212211011 is 11011221202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20212211011 - 2³ = 20212211003 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20212210982 and 20212211000.

It is not a weakly prime, because it can be changed into another prime (20212211111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106105505 + 10106105506.

It is an arithmetic number, because the mean of its divisors is an integer number (10106105506).

Almost surely, 2^20212211011 is an apocalyptic number.

20212211011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212211011 is an equidigital number, since it uses as much as digits as its factorization.

20212211011 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 20212211011 its reverse (11011221202), we get a palindrome (31223432213).

The spelling of 20212211011 in words is "twenty billion, two hundred twelve million, two hundred eleven thousand, eleven".