40223002621 has 4 divisors (see below), whose sum is σ = 40226230144. Its totient is φ = 40219775100.

The previous prime is 40223002579. The next prime is 40223002637. The reversal of 40223002621 is 12620032204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40223002621 - 2³¹ = 38075518973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40223002592 and 40223002601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40223002661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1594995 + ... + 1620016.

It is an arithmetic number, because the mean of its divisors is an integer number (10056557536).

Almost surely, 2^40223002621 is an apocalyptic number.

It is an amenable number.

40223002621 is a deficient number, since it is larger than the sum of its proper divisors (3227523).

40223002621 is a wasteful number, since it uses less digits than its factorization.

40223002621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3227522.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 40223002621 its reverse (12620032204), we get a palindrome (52843034825).

The spelling of 40223002621 in words is "forty billion, two hundred twenty-three million, two thousand, six hundred twenty-one".