1021100221113 has 32 divisors (see below), whose sum is σ = 1649263368960. Its totient is φ = 548571832320.

The previous prime is 1021100221103. The next prime is 1021100221139. The reversal of 1021100221113 is 3111220011201.

It is not a de Polignac number, because 1021100221113 - 2¹⁶ = 1021100155577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021100221092 and 1021100221101.

It is not an unprimeable number, because it can be changed into a prime (1021100221103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1207758 + ... + 1871063.

It is an arithmetic number, because the mean of its divisors is an integer number (51539480280).

Almost surely, 2^{1021100221113} is an apocalyptic number.

It is an amenable number.

1021100221113 is a deficient number, since it is larger than the sum of its proper divisors (628163147847).

1021100221113 is a wasteful number, since it uses less digits than its factorization.

1021100221113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3079777.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1021100221113 its reverse (3111220011201), we get a palindrome (4132320232314).

The spelling of 1021100221113 in words is "one trillion, twenty-one billion, one hundred million, two hundred twenty-one thousand, one hundred thirteen".