40101522121 has 4 divisors (see below), whose sum is σ = 40273631892. Its totient is φ = 39929412352.

The previous prime is 40101522119. The next prime is 40101522137. The reversal of 40101522121 is 12122510104.

40101522121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 24014151225 + 16087370896 = 154965^2 + 126836^2 .

It is a cyclic number.

It is not a de Polignac number, because 40101522121 - 2¹ = 40101522119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40101522191) 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, 86054536 + ... + 86055001.

It is an arithmetic number, because the mean of its divisors is an integer number (10068407973).

Almost surely, 2^40101522121 is an apocalyptic number.

It is an amenable number.

40101522121 is a deficient number, since it is larger than the sum of its proper divisors (172109771).

40101522121 is a wasteful number, since it uses less digits than its factorization.

40101522121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172109770.

The product of its (nonzero) digits is 160, while the sum is 19.

The spelling of 40101522121 in words is "forty billion, one hundred one million, five hundred twenty-two thousand, one hundred twenty-one".