1020110112221 has 32 divisors (see below), whose sum is σ = 1064603865600. Its totient is φ = 977003596800.

The previous prime is 1020110112187. The next prime is 1020110112283. The reversal of 1020110112221 is 1222110110201.

It is a cyclic number.

It is not a de Polignac number, because 1020110112221 - 2²² = 1020105917917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020110112196 and 1020110112205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020110112521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83343020 + ... + 83355258.

It is an arithmetic number, because the mean of its divisors is an integer number (33268870800).

Almost surely, 2^{1020110112221} is an apocalyptic number.

It is an amenable number.

1020110112221 is a deficient number, since it is larger than the sum of its proper divisors (44493753379).

1020110112221 is a wasteful number, since it uses less digits than its factorization.

1020110112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12629.

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

Adding to 1020110112221 its reverse (1222110110201), we get a palindrome (2242220222422).

The spelling of 1020110112221 in words is "one trillion, twenty billion, one hundred ten million, one hundred twelve thousand, two hundred twenty-one".