1012221010111 has 4 divisors (see below), whose sum is σ = 1028814797224. Its totient is φ = 995627223000.

The previous prime is 1012221010067. The next prime is 1012221010121. The reversal of 1012221010111 is 1110101222101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1012221010111 - 2¹³ = 1012221001919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012221010091 and 1012221010100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012221010121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8296893465 + ... + 8296893586.

It is an arithmetic number, because the mean of its divisors is an integer number (257203699306).

Almost surely, 2^{1012221010111} is an apocalyptic number.

1012221010111 is a deficient number, since it is larger than the sum of its proper divisors (16593787113).

1012221010111 is an equidigital number, since it uses as much as digits as its factorization.

1012221010111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16593787112.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1012221010111 its reverse (1110101222101), we get a palindrome (2122322232212).

The spelling of 1012221010111 in words is "one trillion, twelve billion, two hundred twenty-one million, ten thousand, one hundred eleven".