1020221000111 has 4 divisors (see below), whose sum is σ = 1021901760192. Its totient is φ = 1018540240032.

The previous prime is 1020221000041. The next prime is 1020221000143. The reversal of 1020221000111 is 1110001220201.

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 1020221000111 - 2³⁰ = 1019147258287 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020221000092 and 1020221000101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020221000311) 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, 840379130 + ... + 840380343.

It is an arithmetic number, because the mean of its divisors is an integer number (255475440048).

Almost surely, 2^{1020221000111} is an apocalyptic number.

1020221000111 is a deficient number, since it is larger than the sum of its proper divisors (1680760081).

1020221000111 is an equidigital number, since it uses as much as digits as its factorization.

1020221000111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680760080.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1020221000111 its reverse (1110001220201), we get a palindrome (2130222220312).

The spelling of 1020221000111 in words is "one trillion, twenty billion, two hundred twenty-one million, one hundred eleven", and thus it is an aban number.