21226061041 has 4 divisors (see below), whose sum is σ = 21263763312. Its totient is φ = 21188358772.

The previous prime is 21226061029. The next prime is 21226061149. The reversal of 21226061041 is 14016062212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21226061041 - 2¹¹ = 21226058993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21226060997 and 21226061015.

It is not an unprimeable number, because it can be changed into a prime (21226061341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18850291 + ... + 18851416.

It is an arithmetic number, because the mean of its divisors is an integer number (5315940828).

Almost surely, 2^21226061041 is an apocalyptic number.

It is an amenable number.

21226061041 is a deficient number, since it is larger than the sum of its proper divisors (37702271).

21226061041 is an equidigital number, since it uses as much as digits as its factorization.

21226061041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37702270.

The product of its (nonzero) digits is 1152, while the sum is 25.

The spelling of 21226061041 in words is "twenty-one billion, two hundred twenty-six million, sixty-one thousand, forty-one".