404440212120131 has 16 divisors (see below), whose sum is σ = 466132652951040. Its totient is φ = 347441468146080.

The previous prime is 404440212120103. The next prime is 404440212120137. The reversal of 404440212120131 is 131021212044404.

It is not a de Polignac number, because 404440212120131 - 2¹⁰ = 404440212119107 is a prime.

It is a super-2 number, since 2×404440212120131² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404440212120094 and 404440212120103.

It is not an unprimeable number, because it can be changed into a prime (404440212120137) 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, 13487619641 + ... + 13487649626.

It is an arithmetic number, because the mean of its divisors is an integer number (29133290809440).

Almost surely, 2^{404440212120131} is an apocalyptic number.

404440212120131 is a deficient number, since it is larger than the sum of its proper divisors (61692440830909).

404440212120131 is a wasteful number, since it uses less digits than its factorization.

404440212120131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26975269354.

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 404440212120131 its reverse (131021212044404), we get a palindrome (535461424164535).

The spelling of 404440212120131 in words is "four hundred four trillion, four hundred forty billion, two hundred twelve million, one hundred twenty thousand, one hundred thirty-one".