1012110012221 has 48 divisors (see below), whose sum is σ = 1309932269568. Its totient is φ = 759674395200.

The previous prime is 1012110012217. The next prime is 1012110012227. The reversal of 1012110012221 is 1222100112101.

It is not a de Polignac number, because 1012110012221 - 2² = 1012110012217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012110012196 and 1012110012205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012110012227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27892136 + ... + 27928398.

It is an arithmetic number, because the mean of its divisors is an integer number (27290255616).

Almost surely, 2^{1012110012221} is an apocalyptic number.

1012110012221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1012110012221 is a deficient number, since it is larger than the sum of its proper divisors (297822257347).

1012110012221 is a wasteful number, since it uses less digits than its factorization.

1012110012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36770 (or 36741 counting only the distinct ones).

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

Adding to 1012110012221 its reverse (1222100112101), we get a palindrome (2234210124322).

The spelling of 1012110012221 in words is "one trillion, twelve billion, one hundred ten million, twelve thousand, two hundred twenty-one".