20132221007 has 2 divisors, whose sum is σ = 20132221008. Its totient is φ = 20132221006.

The previous prime is 20132220971. The next prime is 20132221009. The reversal of 20132221007 is 70012223102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20132221007 - 2⁶ = 20132220943 is a prime.

Together with 20132221009, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20132221007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20132221009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10066110503 + 10066110504.

It is an arithmetic number, because the mean of its divisors is an integer number (10066110504).

Almost surely, 2^20132221007 is an apocalyptic number.

20132221007 is a deficient number, since it is larger than the sum of its proper divisors (1).

20132221007 is an equidigital number, since it uses as much as digits as its factorization.

20132221007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 20.

Adding to 20132221007 its reverse (70012223102), we get a palindrome (90144444109).

The spelling of 20132221007 in words is "twenty billion, one hundred thirty-two million, two hundred twenty-one thousand, seven".