1021201111101 has 4 divisors (see below), whose sum is σ = 1361601481472. Its totient is φ = 680800740732.

The previous prime is 1021201111079. The next prime is 1021201111207. The reversal of 1021201111101 is 1011111021201.

1021201111101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1021201111101 - 2¹⁵ = 1021201078333 is a prime.

It is a super-3 number, since 3×1021201111101³ (a number of 37 digits) contains 333 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 (1021201111901) 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, 170200185181 + ... + 170200185186.

It is an arithmetic number, because the mean of its divisors is an integer number (340400370368).

Almost surely, 2^{1021201111101} is an apocalyptic number.

It is an amenable number.

1021201111101 is a deficient number, since it is larger than the sum of its proper divisors (340400370371).

1021201111101 is an equidigital number, since it uses as much as digits as its factorization.

1021201111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340400370370.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1021201111101 its reverse (1011111021201), we get a palindrome (2032312132302).

The spelling of 1021201111101 in words is "one trillion, twenty-one billion, two hundred one million, one hundred eleven thousand, one hundred one".