22121242143441 has 16 divisors (see below), whose sum is σ = 33709772928000. Its totient is φ = 12640254744528.

The previous prime is 22121242143439. The next prime is 22121242143449. The reversal of 22121242143441 is 14434124212122.

It is a happy number.

It is not a de Polignac number, because 22121242143441 - 2¹ = 22121242143439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22121242143449) 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, 18362811 + ... + 19530368.

It is an arithmetic number, because the mean of its divisors is an integer number (2106860808000).

Almost surely, 2^{22121242143441} is an apocalyptic number.

22121242143441 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22121242143441 is a deficient number, since it is larger than the sum of its proper divisors (11588530784559).

22121242143441 is a wasteful number, since it uses less digits than its factorization.

22121242143441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37920988.

The product of its digits is 24576, while the sum is 33.

Adding to 22121242143441 its reverse (14434124212122), we get a palindrome (36555366355563).

The spelling of 22121242143441 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred forty-two million, one hundred forty-three thousand, four hundred forty-one".