12021441411 has 24 divisors (see below), whose sum is σ = 18649626624. Its totient is φ = 6867875280.

The previous prime is 12021441409. The next prime is 12021441529. The reversal of 12021441411 is 11414412021.

It is not a de Polignac number, because 12021441411 - 2¹ = 12021441409 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (12021441011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1286446 + ... + 1295756.

It is an arithmetic number, because the mean of its divisors is an integer number (777067776).

Almost surely, 2^12021441411 is an apocalyptic number.

12021441411 is a deficient number, since it is larger than the sum of its proper divisors (6628185213).

12021441411 is an equidigital number, since it uses as much as digits as its factorization.

12021441411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18111 (or 18104 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12021441411 its reverse (11414412021), we get a palindrome (23435853432).

The spelling of 12021441411 in words is "twelve billion, twenty-one million, four hundred forty-one thousand, four hundred eleven".