2111121001201 has 4 divisors (see below), whose sum is σ = 2132885135332. Its totient is φ = 2089356867072.

The previous prime is 2111121001189. The next prime is 2111121001247. The reversal of 2111121001201 is 1021001211112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 848646288400 + 1262474712801 = 921220^2 + 1123599^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111121001201 - 2⁵ = 2111121001169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2111121011201) 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, 10882066920 + ... + 10882067113.

It is an arithmetic number, because the mean of its divisors is an integer number (533221283833).

Almost surely, 2^{2111121001201} is an apocalyptic number.

It is an amenable number.

2111121001201 is a deficient number, since it is larger than the sum of its proper divisors (21764134131).

2111121001201 is an equidigital number, since it uses as much as digits as its factorization.

2111121001201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21764134130.

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

Adding to 2111121001201 its reverse (1021001211112), we get a palindrome (3132122212313).

The spelling of 2111121001201 in words is "two trillion, one hundred eleven billion, one hundred twenty-one million, one thousand, two hundred one".