20212233091 has 2 divisors, whose sum is σ = 20212233092. Its totient is φ = 20212233090.

The previous prime is 20212233077. The next prime is 20212233121. The reversal of 20212233091 is 19033221202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20212233091 - 2¹³ = 20212224899 is a prime.

It is not a weakly prime, because it can be changed into another prime (20212233031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106116545 + 10106116546.

It is an arithmetic number, because the mean of its divisors is an integer number (10106116546).

Almost surely, 2^20212233091 is an apocalyptic number.

20212233091 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212233091 is an equidigital number, since it uses as much as digits as its factorization.

20212233091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 20212233091 its reverse (19033221202), we get a palindrome (39245454293).

The spelling of 20212233091 in words is "twenty billion, two hundred twelve million, two hundred thirty-three thousand, ninety-one".