1012022020221 has 16 divisors (see below), whose sum is σ = 1362700984320. Its totient is φ = 668014487280.

The previous prime is 1012022020171. The next prime is 1012022020249. The reversal of 1012022020221 is 1220202202101.

It is not a de Polignac number, because 1012022020221 - 2⁹ = 1012022019709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1012022020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012022020621) 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, 1506640 + ... + 2072198.

It is an arithmetic number, because the mean of its divisors is an integer number (85168811520).

Almost surely, 2^{1012022020221} is an apocalyptic number.

It is an amenable number.

1012022020221 is a deficient number, since it is larger than the sum of its proper divisors (350678964099).

1012022020221 is a wasteful number, since it uses less digits than its factorization.

1012022020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571456.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1012022020221 its reverse (1220202202101), we get a palindrome (2232224222322).

The spelling of 1012022020221 in words is "one trillion, twelve billion, twenty-two million, twenty thousand, two hundred twenty-one".