1011220020111 has 8 divisors (see below), whose sum is σ = 1540906697344. Its totient is φ = 577840011480.

The previous prime is 1011220020103. The next prime is 1011220020121. The reversal of 1011220020111 is 1110200221101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1011220020111 - 2³ = 1011220020103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011220020121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24076667125 + ... + 24076667166.

It is an arithmetic number, because the mean of its divisors is an integer number (192613337168).

Almost surely, 2^{1011220020111} is an apocalyptic number.

1011220020111 is a deficient number, since it is larger than the sum of its proper divisors (529686677233).

1011220020111 is an equidigital number, since it uses as much as digits as its factorization.

1011220020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48153334301.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1011220020111 its reverse (1110200221101), we get a palindrome (2121420241212).

The spelling of 1011220020111 in words is "one trillion, eleven billion, two hundred twenty million, twenty thousand, one hundred eleven".