40211121 has 8 divisors (see below), whose sum is σ = 54037504. Its totient is φ = 26596080.

The previous prime is 40211117. The next prime is 40211131. The reversal of 40211121 is 12111204.

It is a happy number.

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

It is not a de Polignac number, because 40211121 - 2² = 40211117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40211097 and 40211106.

It is not an unprimeable number, because it can be changed into a prime (40211111) 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, 52390 + ... + 53151.

It is an arithmetic number, because the mean of its divisors is an integer number (6754688).

Almost surely, 2^40211121 is an apocalyptic number.

It is an amenable number.

40211121 is a deficient number, since it is larger than the sum of its proper divisors (13826383).

40211121 is a wasteful number, since it uses less digits than its factorization.

40211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105671.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 40211121 is about 6341.2239354875. The cubic root of 40211121 is about 342.5958202429.

Adding to 40211121 its reverse (12111204), we get a palindrome (52322325).

The spelling of 40211121 in words is "forty million, two hundred eleven thousand, one hundred twenty-one".