40400221123 has 2 divisors, whose sum is σ = 40400221124. Its totient is φ = 40400221122.

The previous prime is 40400221097. The next prime is 40400221139. The reversal of 40400221123 is 32112200404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40400221123 - 2⁵ = 40400221091 is a prime.

It is a super-2 number, since 2×40400221123² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40400221123.

It is not a weakly prime, because it can be changed into another prime (40400221193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20200110561 + 20200110562.

It is an arithmetic number, because the mean of its divisors is an integer number (20200110562).

Almost surely, 2^40400221123 is an apocalyptic number.

40400221123 is a deficient number, since it is larger than the sum of its proper divisors (1).

40400221123 is an equidigital number, since it uses as much as digits as its factorization.

40400221123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 40400221123 its reverse (32112200404), we get a palindrome (72512421527).

The spelling of 40400221123 in words is "forty billion, four hundred million, two hundred twenty-one thousand, one hundred twenty-three".