1020111011201 has 4 divisors (see below), whose sum is σ = 1037401028400. Its totient is φ = 1002820994004.

The previous prime is 1020111011197. The next prime is 1020111011239. The reversal of 1020111011201 is 1021101110201.

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 a cyclic number.

It is not a de Polignac number, because 1020111011201 - 2² = 1020111011197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1020111011401) 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, 8645008511 + ... + 8645008628.

It is an arithmetic number, because the mean of its divisors is an integer number (259350257100).

Almost surely, 2^{1020111011201} is an apocalyptic number.

It is an amenable number.

1020111011201 is a deficient number, since it is larger than the sum of its proper divisors (17290017199).

1020111011201 is an equidigital number, since it uses as much as digits as its factorization.

1020111011201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17290017198.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1020111011201 its reverse (1021101110201), we get a palindrome (2041212121402).

The spelling of 1020111011201 in words is "one trillion, twenty billion, one hundred eleven million, eleven thousand, two hundred one".