1012102102221 has 64 divisors (see below), whose sum is σ = 1641453465600. Its totient is φ = 542203554816.

The previous prime is 1012102102217. The next prime is 1012102102229. The reversal of 1012102102221 is 1222012012101.

It is not a de Polignac number, because 1012102102221 - 2² = 1012102102217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1012102102221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012102102229) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9550795 + ... + 9656183.

It is an arithmetic number, because the mean of its divisors is an integer number (25647710400).

Almost surely, 2^{1012102102221} is an apocalyptic number.

It is an amenable number.

1012102102221 is a deficient number, since it is larger than the sum of its proper divisors (629351363379).

1012102102221 is a wasteful number, since it uses less digits than its factorization.

1012102102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105818.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1012102102221 its reverse (1222012012101), we get a palindrome (2234114114322).

The spelling of 1012102102221 in words is "one trillion, twelve billion, one hundred two million, one hundred two thousand, two hundred twenty-one".