20402003227 has 2 divisors, whose sum is σ = 20402003228. Its totient is φ = 20402003226.

The previous prime is 20402003177. The next prime is 20402003231. The reversal of 20402003227 is 72230020402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20402003227 is a prime.

It is a super-3 number, since 3×20402003227³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20402003198 and 20402003207.

It is not a weakly prime, because it can be changed into another prime (20402003257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10201001613 + 10201001614.

It is an arithmetic number, because the mean of its divisors is an integer number (10201001614).

Almost surely, 2^20402003227 is an apocalyptic number.

20402003227 is a deficient number, since it is larger than the sum of its proper divisors (1).

20402003227 is an equidigital number, since it uses as much as digits as its factorization.

20402003227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 22.

Adding to 20402003227 its reverse (72230020402), we get a palindrome (92632023629).

The spelling of 20402003227 in words is "twenty billion, four hundred two million, three thousand, two hundred twenty-seven".