1012112102221 has 16 divisors (see below), whose sum is σ = 1206782627328. Its totient is φ = 838043481600.

The previous prime is 1012112102219. The next prime is 1012112102311. The reversal of 1012112102221 is 1222012112101.

It is a cyclic number.

It is not a de Polignac number, because 1012112102221 - 2¹ = 1012112102219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012112102195 and 1012112102204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012112162221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87290400 + ... + 87301993.

It is an arithmetic number, because the mean of its divisors is an integer number (75423914208).

Almost surely, 2^{1012112102221} is an apocalyptic number.

1012112102221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1012112102221 is a deficient number, since it is larger than the sum of its proper divisors (194670525107).

1012112102221 is a wasteful number, since it uses less digits than its factorization.

1012112102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174592452.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1012112102221 its reverse (1222012112101), we get a palindrome (2234124214322).

The spelling of 1012112102221 in words is "one trillion, twelve billion, one hundred twelve million, one hundred two thousand, two hundred twenty-one".