21411122041 has 4 divisors (see below), whose sum is σ = 21455087872. Its totient is φ = 21367156212.

The previous prime is 21411122023. The next prime is 21411122069. The reversal of 21411122041 is 14022111412.

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 21411122041 - 2²³ = 21402733433 is a prime.

It is a super-3 number, since 3×21411122041³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21411122081) 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, 21982185 + ... + 21983158.

It is an arithmetic number, because the mean of its divisors is an integer number (5363771968).

Almost surely, 2^21411122041 is an apocalyptic number.

It is an amenable number.

21411122041 is a deficient number, since it is larger than the sum of its proper divisors (43965831).

21411122041 is an equidigital number, since it uses as much as digits as its factorization.

21411122041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43965830.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21411122041 its reverse (14022111412), we get a palindrome (35433233453).

The spelling of 21411122041 in words is "twenty-one billion, four hundred eleven million, one hundred twenty-two thousand, forty-one".