40111041221 has 16 divisors (see below), whose sum is σ = 43087530240. Its totient is φ = 37204876800.

The previous prime is 40111041211. The next prime is 40111041241. The reversal of 40111041221 is 12214011104.

It is a cyclic number.

It is not a de Polignac number, because 40111041221 - 2¹⁰ = 40111040197 is a prime.

It is a super-2 number, since 2×40111041221² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40111041221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40111041211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 707321 + ... + 761921.

It is an arithmetic number, because the mean of its divisors is an integer number (2692970640).

Almost surely, 2^40111041221 is an apocalyptic number.

It is an amenable number.

40111041221 is a deficient number, since it is larger than the sum of its proper divisors (2976489019).

40111041221 is a wasteful number, since it uses less digits than its factorization.

40111041221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55244.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 40111041221 its reverse (12214011104), we get a palindrome (52325052325).

It can be divided in two parts, 4011104 and 1221, that multiplied together give a palindrome (4897557984).

The spelling of 40111041221 in words is "forty billion, one hundred eleven million, forty-one thousand, two hundred twenty-one".