1012220221111 has 4 divisors (see below), whose sum is σ = 1104240241224. Its totient is φ = 920200201000.

The previous prime is 1012220221049. The next prime is 1012220221121. The reversal of 1012220221111 is 1111220222101.

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 1012220221111 - 2²⁹ = 1011683350199 is a prime.

It is a super-4 number, since 4×1012220221111⁴ (a number of 49 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012220221121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46010010040 + ... + 46010010061.

It is an arithmetic number, because the mean of its divisors is an integer number (276060060306).

Almost surely, 2^{1012220221111} is an apocalyptic number.

1012220221111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1012220221111 is a deficient number, since it is larger than the sum of its proper divisors (92020020113).

1012220221111 is an equidigital number, since it uses as much as digits as its factorization.

1012220221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92020020112.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1012220221111 its reverse (1111220222101), we get a palindrome (2123440443212).

The spelling of 1012220221111 in words is "one trillion, twelve billion, two hundred twenty million, two hundred twenty-one thousand, one hundred eleven".