1012221210111 has 16 divisors (see below), whose sum is σ = 1433901439200. Its totient is φ = 633935369088.

The previous prime is 1012221210083. The next prime is 1012221210151. The reversal of 1012221210111 is 1110121222101.

It is a happy number.

It is not a de Polignac number, because 1012221210111 - 2¹⁹ = 1012220685823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012221210151) 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, 157222816 + ... + 157229253.

It is an arithmetic number, because the mean of its divisors is an integer number (89618839950).

Almost surely, 2^{1012221210111} is an apocalyptic number.

1012221210111 is a deficient number, since it is larger than the sum of its proper divisors (421680229089).

1012221210111 is a wasteful number, since it uses less digits than its factorization.

1012221210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314452138.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1012221210111 its reverse (1110121222101), we get a palindrome (2122342432212).

The spelling of 1012221210111 in words is "one trillion, twelve billion, two hundred twenty-one million, two hundred ten thousand, one hundred eleven".