1021111120201 has 16 divisors (see below), whose sum is σ = 1040433958080. Its totient is φ = 1001856930880.

The previous prime is 1021111120177. The next prime is 1021111120247. The reversal of 1021111120201 is 1020211111201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1021111120201 - 2¹⁵ = 1021111087433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021111120501) 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, 113313786 + ... + 113322796.

It is an arithmetic number, because the mean of its divisors is an integer number (65027122380).

Almost surely, 2^{1021111120201} is an apocalyptic number.

It is an amenable number.

1021111120201 is a deficient number, since it is larger than the sum of its proper divisors (19322837879).

1021111120201 is an equidigital number, since it uses as much as digits as its factorization.

1021111120201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12584.

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

Adding to 1021111120201 its reverse (1020211111201), we get a palindrome (2041322231402).

The spelling of 1021111120201 in words is "one trillion, twenty-one billion, one hundred eleven million, one hundred twenty thousand, two hundred one".