1012110222221 has 32 divisors (see below), whose sum is σ = 1170494481408. Its totient is φ = 857245213440.

The previous prime is 1012110222217. The next prime is 1012110222223. The reversal of 1012110222221 is 1222220112101.

It is not a de Polignac number, because 1012110222221 - 2² = 1012110222217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1012110222221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012110222223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 373884950 + ... + 373887656.

It is an arithmetic number, because the mean of its divisors is an integer number (36577952544).

Almost surely, 2^{1012110222221} is an apocalyptic number.

It is an amenable number.

1012110222221 is a deficient number, since it is larger than the sum of its proper divisors (158384259187).

1012110222221 is a wasteful number, since it uses less digits than its factorization.

1012110222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4641.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1012110222221 its reverse (1222220112101), we get a palindrome (2234330334322).

The spelling of 1012110222221 in words is "one trillion, twelve billion, one hundred ten million, two hundred twenty-two thousand, two hundred twenty-one".