40221234253 has 2 divisors, whose sum is σ = 40221234254. Its totient is φ = 40221234252.

The previous prime is 40221234223. The next prime is 40221234257. The reversal of 40221234253 is 35243212204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38226897289 + 1994336964 = 195517^2 + 44658^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40221234253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40221234257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20110617126 + 20110617127.

It is an arithmetic number, because the mean of its divisors is an integer number (20110617127).

Almost surely, 2^40221234253 is an apocalyptic number.

It is an amenable number.

40221234253 is a deficient number, since it is larger than the sum of its proper divisors (1).

40221234253 is an equidigital number, since it uses as much as digits as its factorization.

40221234253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 40221234253 its reverse (35243212204), we get a palindrome (75464446457).

The spelling of 40221234253 in words is "forty billion, two hundred twenty-one million, two hundred thirty-four thousand, two hundred fifty-three".