40121233320 has 192 divisors, whose sum is σ = 140128125120. Its totient is φ = 9163155456.

The previous prime is 40121233319. The next prime is 40121233331. The reversal of 40121233320 is 2333212104.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11011419 + ... + 11015061.

It is an arithmetic number, because the mean of its divisors is an integer number (729833985).

Almost surely, 2^40121233320 is an apocalyptic number.

40121233320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40121233320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70064062560).

40121233320 is an abundant number, since it is smaller than the sum of its proper divisors (100006891800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40121233320 is a wasteful number, since it uses less digits than its factorization.

40121233320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5544 (or 5533 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 40121233320 its reverse (2333212104), we get a palindrome (42454445424).

The spelling of 40121233320 in words is "forty billion, one hundred twenty-one million, two hundred thirty-three thousand, three hundred twenty".