2013221101221 has 48 divisors (see below), whose sum is σ = 3312861507072. Its totient is φ = 1166173351200.

The previous prime is 2013221101217. The next prime is 2013221101231. The reversal of 2013221101221 is 1221011223102.

2013221101221 is a `hidden beast` number, since 20 + 1 + 322 + 1 + 101 + 221 = 666.

It is not a de Polignac number, because 2013221101221 - 2² = 2013221101217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2013221101194 and 2013221101203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013221101201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2576826 + ... + 3265956.

It is an arithmetic number, because the mean of its divisors is an integer number (69017948064).

Almost surely, 2^{2013221101221} is an apocalyptic number.

It is an amenable number.

2013221101221 is a deficient number, since it is larger than the sum of its proper divisors (1299640405851).

2013221101221 is a wasteful number, since it uses less digits than its factorization.

2013221101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690454 (or 690451 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2013221101221 its reverse (1221011223102), we get a palindrome (3234232324323).

The spelling of 2013221101221 in words is "two trillion, thirteen billion, two hundred twenty-one million, one hundred one thousand, two hundred twenty-one".