4040122212021 has 32 divisors (see below), whose sum is σ = 6507286297600. Its totient is φ = 2178058533120.

The previous prime is 4040122211929. The next prime is 4040122212067. The reversal of 4040122212021 is 1202122210404.

It is not a de Polignac number, because 4040122212021 - 2⁷ = 4040122211893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4040122292021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20911351 + ... + 21103668.

It is an arithmetic number, because the mean of its divisors is an integer number (203352696800).

Almost surely, 2^{4040122212021} is an apocalyptic number.

It is an amenable number.

4040122212021 is a deficient number, since it is larger than the sum of its proper divisors (2467164085579).

4040122212021 is a wasteful number, since it uses less digits than its factorization.

4040122212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42015289.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 4040122212021 its reverse (1202122210404), we get a palindrome (5242244422425).

The spelling of 4040122212021 in words is "four trillion, forty billion, one hundred twenty-two million, two hundred twelve thousand, twenty-one".