21410404401 has 16 divisors (see below), whose sum is σ = 30230492544. Its totient is φ = 13432184064.

The previous prime is 21410404397. The next prime is 21410404441. The reversal of 21410404401 is 10440401412.

It is not a de Polignac number, because 21410404401 - 2² = 21410404397 is a prime.

It is a super-2 number, since 2×21410404401² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21410404441) 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, 429940 + ... + 477146.

It is an arithmetic number, because the mean of its divisors is an integer number (1889405784).

Almost surely, 2^21410404401 is an apocalyptic number.

It is an amenable number.

21410404401 is a deficient number, since it is larger than the sum of its proper divisors (8820088143).

21410404401 is a wasteful number, since it uses less digits than its factorization.

21410404401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56120.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 21410404401 its reverse (10440401412), we get a palindrome (31850805813).

The spelling of 21410404401 in words is "twenty-one billion, four hundred ten million, four hundred four thousand, four hundred one".