21411033001 has 4 divisors (see below), whose sum is σ = 21762033604. Its totient is φ = 21060032400.

The previous prime is 21411032983. The next prime is 21411033031. The reversal of 21411033001 is 10033011412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3206277376 + 18204755625 = 56624^2 + 134925^2 .

It is a cyclic number.

It is not a de Polignac number, because 21411033001 - 2¹³ = 21411024809 is a prime.

It is a super-2 number, since 2×21411033001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21411033031) 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, 175500210 + ... + 175500331.

It is an arithmetic number, because the mean of its divisors is an integer number (5440508401).

Almost surely, 2^21411033001 is an apocalyptic number.

It is an amenable number.

21411033001 is a deficient number, since it is larger than the sum of its proper divisors (351000603).

21411033001 is an equidigital number, since it uses as much as digits as its factorization.

21411033001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351000602.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21411033001 its reverse (10033011412), we get a palindrome (31444044413).

The spelling of 21411033001 in words is "twenty-one billion, four hundred eleven million, thirty-three thousand, one".