21221232111410 has 8 divisors (see below), whose sum is σ = 38198217800556. Its totient is φ = 8488492844560.

The previous prime is 21221232111407. The next prime is 21221232111461. The reversal of 21221232111410 is 1411123212212.

It can be written as a sum of positive squares in 2 ways, for example, as 20905204872841 + 316027238569 = 4572221^2 + 562163^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1061061605561 + ... + 1061061605580.

Almost surely, 2^{21221232111410} is an apocalyptic number.

21221232111410 is a deficient number, since it is larger than the sum of its proper divisors (16976985689146).

21221232111410 is a wasteful number, since it uses less digits than its factorization.

21221232111410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2122123211148.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 21221232111410 its reverse (1411123212212), we get a palindrome (22632355323622).

The spelling of 21221232111410 in words is "twenty-one trillion, two hundred twenty-one billion, two hundred thirty-two million, one hundred eleven thousand, four hundred ten".