1012110211021 has 12 divisors (see below), whose sum is σ = 1267918287132. Its totient is φ = 800790496128.

The previous prime is 1012110211019. The next prime is 1012110211109. The reversal of 1012110211021 is 1201120112101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 477120366121 + 534989844900 = 690739^2 + 731430^2 .

It is not a de Polignac number, because 1012110211021 - 2¹ = 1012110211019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1012110210992 and 1012110211010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012110211121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 794434380 + ... + 794435653.

It is an arithmetic number, because the mean of its divisors is an integer number (105659857261).

Almost surely, 2^{1012110211021} is an apocalyptic number.

It is an amenable number.

1012110211021 is a deficient number, since it is larger than the sum of its proper divisors (255808076111).

1012110211021 is a wasteful number, since it uses less digits than its factorization.

1012110211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588870060 (or 1588870053 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1012110211021 its reverse (1201120112101), we get a palindrome (2213230323122).

The spelling of 1012110211021 in words is "one trillion, twelve billion, one hundred ten million, two hundred eleven thousand, twenty-one".