1121020100201 has 4 divisors (see below), whose sum is σ = 1121046542592. Its totient is φ = 1120993657812.

The previous prime is 1121020100191. The next prime is 1121020100219. The reversal of 1121020100201 is 1020010201211.

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 a de Polignac number, because none of the positive numbers 2^k-1121020100201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121020100231) 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, 13157501 + ... + 13242426.

It is an arithmetic number, because the mean of its divisors is an integer number (280261635648).

Almost surely, 2^{1121020100201} is an apocalyptic number.

It is an amenable number.

1121020100201 is a deficient number, since it is larger than the sum of its proper divisors (26442391).

1121020100201 is an equidigital number, since it uses as much as digits as its factorization.

1121020100201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26442390.

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

Adding to 1121020100201 its reverse (1020010201211), we get a palindrome (2141030301412).

It can be divided in two parts, 1121020 and 100201, that added together give a palindrome (1221221).

The spelling of 1121020100201 in words is "one trillion, one hundred twenty-one billion, twenty million, one hundred thousand, two hundred one".