1012220110021 has 8 divisors (see below), whose sum is σ = 1071803190744. Its totient is φ = 952641553920.

The previous prime is 1012220110001. The next prime is 1012220110093. The reversal of 1012220110021 is 1200110222101.

It can be written as a sum of positive squares in 4 ways, for example, as 327109644225 + 685110465796 = 571935^2 + 827714^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1012220110021 - 2¹⁹ = 1012219585733 is a prime.

It is a super-2 number, since 2×1012220110021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012220109983 and 1012220110010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012220110001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 665070 + ... + 1570591.

It is an arithmetic number, because the mean of its divisors is an integer number (133975398843).

Almost surely, 2^{1012220110021} is an apocalyptic number.

It is an amenable number.

1012220110021 is a deficient number, since it is larger than the sum of its proper divisors (59583080723).

1012220110021 is a wasteful number, since it uses less digits than its factorization.

1012220110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2262311.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1012220110021 its reverse (1200110222101), we get a palindrome (2212330332122).

The spelling of 1012220110021 in words is "one trillion, twelve billion, two hundred twenty million, one hundred ten thousand, twenty-one".