40215105121 has 8 divisors (see below), whose sum is σ = 41334240384. Its totient is φ = 39097666800.

The previous prime is 40215105103. The next prime is 40215105163. The reversal of 40215105121 is 12150151204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40215105121 - 2³³ = 31625170529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40215105092 and 40215105101.

It is not an unprimeable number, because it can be changed into a prime (40215145121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376105 + ... + 471046.

It is an arithmetic number, because the mean of its divisors is an integer number (5166780048).

Almost surely, 2^40215105121 is an apocalyptic number.

It is an amenable number.

40215105121 is a deficient number, since it is larger than the sum of its proper divisors (1119135263).

40215105121 is a wasteful number, since it uses less digits than its factorization.

40215105121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848471.

The product of its (nonzero) digits is 400, while the sum is 22.

Adding to 40215105121 its reverse (12150151204), we get a palindrome (52365256325).

The spelling of 40215105121 in words is "forty billion, two hundred fifteen million, one hundred five thousand, one hundred twenty-one".