40232210212421 has 4 divisors (see below), whose sum is σ = 40588247471052. Its totient is φ = 39876172953792.

The previous prime is 40232210212417. The next prime is 40232210212423. The reversal of 40232210212421 is 12421201223204.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6149849452321 + 34082360760100 = 2479889^2 + 5838010^2 .

It is a cyclic number.

It is not a de Polignac number, because 40232210212421 - 2² = 40232210212417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40232210212423) 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, 178018629146 + ... + 178018629371.

It is an arithmetic number, because the mean of its divisors is an integer number (10147061867763).

Almost surely, 2^{40232210212421} is an apocalyptic number.

It is an amenable number.

40232210212421 is a deficient number, since it is larger than the sum of its proper divisors (356037258631).

40232210212421 is a wasteful number, since it uses less digits than its factorization.

40232210212421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356037258630.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 40232210212421 its reverse (12421201223204), we get a palindrome (52653411435625).

The spelling of 40232210212421 in words is "forty trillion, two hundred thirty-two billion, two hundred ten million, two hundred twelve thousand, four hundred twenty-one".