20222011081 has 2 divisors, whose sum is σ = 20222011082. Its totient is φ = 20222011080.

The previous prime is 20222010983. The next prime is 20222011093. The reversal of 20222011081 is 18011022202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15452727481 + 4769283600 = 124309^2 + 69060^2 .

It is a cyclic number.

It is not a de Polignac number, because 20222011081 - 2²⁷ = 20087793353 is a prime.

It is a super-3 number, since 3×20222011081³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (20222012081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10111005540 + 10111005541.

It is an arithmetic number, because the mean of its divisors is an integer number (10111005541).

Almost surely, 2^20222011081 is an apocalyptic number.

It is an amenable number.

20222011081 is a deficient number, since it is larger than the sum of its proper divisors (1).

20222011081 is an equidigital number, since it uses as much as digits as its factorization.

20222011081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 20222011081 its reverse (18011022202), we get a palindrome (38233033283).

The spelling of 20222011081 in words is "twenty billion, two hundred twenty-two million, eleven thousand, eighty-one".