21211120202201 has 8 divisors (see below), whose sum is σ = 22133532640320. Its totient is φ = 20288723582512.

The previous prime is 21211120202191. The next prime is 21211120202243. The reversal of 21211120202201 is 10220202111212.

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 21211120202201 - 2¹⁴ = 21211120185817 is a prime.

It is a super-2 number, since 2×21211120202201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21211120202201.

It is not an unprimeable number, because it can be changed into a prime (21211120204201) 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, 1172831 + ... + 6617988.

It is an arithmetic number, because the mean of its divisors is an integer number (2766691580040).

Almost surely, 2^{21211120202201} is an apocalyptic number.

It is an amenable number.

21211120202201 is a deficient number, since it is larger than the sum of its proper divisors (922412438119).

21211120202201 is a wasteful number, since it uses less digits than its factorization.

21211120202201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7909215.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21211120202201 its reverse (10220202111212), we get a palindrome (31431322313413).

The spelling of 21211120202201 in words is "twenty-one trillion, two hundred eleven billion, one hundred twenty million, two hundred two thousand, two hundred one".