40010121321 has 24 divisors (see below), whose sum is σ = 56647994400. Its totient is φ = 25114411584.

The previous prime is 40010121313. The next prime is 40010121329. The reversal of 40010121321 is 12312101004.

It is an interprime number because it is at equal distance from previous prime (40010121313) and next prime (40010121329).

It is not a de Polignac number, because 40010121321 - 2³ = 40010121313 is a prime.

It is a super-2 number, since 2×40010121321² (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 40010121321.

It is not an unprimeable number, because it can be changed into a prime (40010121329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63205 + ... + 289853.

It is an arithmetic number, because the mean of its divisors is an integer number (2360333100).

Almost surely, 2^40010121321 is an apocalyptic number.

It is an amenable number.

40010121321 is a deficient number, since it is larger than the sum of its proper divisors (16637873079).

40010121321 is a wasteful number, since it uses less digits than its factorization.

40010121321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226853 (or 226834 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 40010121321 its reverse (12312101004), we get a palindrome (52322222325).

The spelling of 40010121321 in words is "forty billion, ten million, one hundred twenty-one thousand, three hundred twenty-one".