40111032121 has 4 divisors (see below), whose sum is σ = 40342887972. Its totient is φ = 39879176272.

The previous prime is 40111032079. The next prime is 40111032133. The reversal of 40111032121 is 12123011104.

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 33780602025 + 6330430096 = 183795^2 + 79564^2 .

It is a cyclic number.

It is not a de Polignac number, because 40111032121 - 2¹¹ = 40111030073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40111032095 and 40111032104.

It is not an unprimeable number, because it can be changed into a prime (40111032151) 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, 115927666 + ... + 115928011.

It is an arithmetic number, because the mean of its divisors is an integer number (10085721993).

Almost surely, 2^40111032121 is an apocalyptic number.

It is an amenable number.

40111032121 is a deficient number, since it is larger than the sum of its proper divisors (231855851).

40111032121 is a wasteful number, since it uses less digits than its factorization.

40111032121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231855850.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 40111032121 its reverse (12123011104), we get a palindrome (52234043225).

The spelling of 40111032121 in words is "forty billion, one hundred eleven million, thirty-two thousand, one hundred twenty-one".