40213220422 has 4 divisors (see below), whose sum is σ = 60319830636. Its totient is φ = 20106610210.

The previous prime is 40213220347. The next prime is 40213220431. The reversal of 40213220422 is 22402231204.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 40213220393 and 40213220402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10053305104 + ... + 10053305107.

It is an arithmetic number, because the mean of its divisors is an integer number (15079957659).

Almost surely, 2^40213220422 is an apocalyptic number.

40213220422 is a deficient number, since it is larger than the sum of its proper divisors (20106610214).

40213220422 is a wasteful number, since it uses less digits than its factorization.

40213220422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20106610213.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 40213220422 its reverse (22402231204), we get a palindrome (62615451626).

The spelling of 40213220422 in words is "forty billion, two hundred thirteen million, two hundred twenty thousand, four hundred twenty-two".