21221010201101 has 8 divisors (see below), whose sum is σ = 21738716423424. Its totient is φ = 20703309722080.

The previous prime is 21221010201089. The next prime is 21221010201103. The reversal of 21221010201101 is 10110201012212.

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

It is a cyclic number.

It is not a de Polignac number, because 21221010201101 - 2⁶ = 21221010201037 is a prime.

It is a super-2 number, since 2×21221010201101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21221010201103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6583946 + ... + 9262308.

It is an arithmetic number, because the mean of its divisors is an integer number (2717339552928).

Almost surely, 2^{21221010201101} is an apocalyptic number.

It is an amenable number.

21221010201101 is a deficient number, since it is larger than the sum of its proper divisors (517706222323).

21221010201101 is a wasteful number, since it uses less digits than its factorization.

21221010201101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871651.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21221010201101 its reverse (10110201012212), we get a palindrome (31331211213313).

The spelling of 21221010201101 in words is "twenty-one trillion, two hundred twenty-one billion, ten million, two hundred one thousand, one hundred one".