10010101211221 has 8 divisors (see below), whose sum is σ = 10599924504960. Its totient is φ = 9420388340928.

The previous prime is 10010101211219. The next prime is 10010101211267. The reversal of 10010101211221 is 12211210101001.

It is a happy number.

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 10010101211221 - 2¹ = 10010101211219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10010101211291) 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, 27419181 + ... + 27781858.

It is an arithmetic number, because the mean of its divisors is an integer number (1324990563120).

Almost surely, 2^{10010101211221} is an apocalyptic number.

It is an amenable number.

10010101211221 is a deficient number, since it is larger than the sum of its proper divisors (589823293739).

10010101211221 is a wasteful number, since it uses less digits than its factorization.

10010101211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55211723.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10010101211221 its reverse (12211210101001), we get a palindrome (22221311312222).

The spelling of 10010101211221 in words is "ten trillion, ten billion, one hundred one million, two hundred eleven thousand, two hundred twenty-one".