2021221110113 has 4 divisors (see below), whose sum is σ = 2127601168560. Its totient is φ = 1914841051668.

The previous prime is 2021221110067. The next prime is 2021221110131. The reversal of 2021221110113 is 3110111221202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2021221110113 - 2¹² = 2021221106017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021221110091 and 2021221110100.

It is not an unprimeable number, because it can be changed into a prime (2021221110173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53190029195 + ... + 53190029232.

It is an arithmetic number, because the mean of its divisors is an integer number (531900292140).

Almost surely, 2^{2021221110113} is an apocalyptic number.

It is an amenable number.

2021221110113 is a deficient number, since it is larger than the sum of its proper divisors (106380058447).

2021221110113 is a wasteful number, since it uses less digits than its factorization.

2021221110113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106380058446.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 2021221110113 its reverse (3110111221202), we get a palindrome (5131332331315).

The spelling of 2021221110113 in words is "two trillion, twenty-one billion, two hundred twenty-one million, one hundred ten thousand, one hundred thirteen".