2221010111021 has 8 divisors (see below), whose sum is σ = 2399547905664. Its totient is φ = 2043571011120.

The previous prime is 2221010111017. The next prime is 2221010111039. The reversal of 2221010111021 is 1201110101222.

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 2221010111021 - 2² = 2221010111017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2221010110987 and 2221010111005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221010111051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274669481 + ... + 274677566.

It is an arithmetic number, because the mean of its divisors is an integer number (299943488208).

Almost surely, 2^{2221010111021} is an apocalyptic number.

It is an amenable number.

2221010111021 is a deficient number, since it is larger than the sum of its proper divisors (178537794643).

2221010111021 is a wasteful number, since it uses less digits than its factorization.

2221010111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549347371.

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

Adding to 2221010111021 its reverse (1201110101222), we get a palindrome (3422120212243).

The spelling of 2221010111021 in words is "two trillion, two hundred twenty-one billion, ten million, one hundred eleven thousand, twenty-one".