2122011201001 has 4 divisors (see below), whose sum is σ = 2122097721732. Its totient is φ = 2121924680272.

The previous prime is 2122011200993. The next prime is 2122011201019. The reversal of 2122011201001 is 1001021102212.

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 592030219225 + 1529980981776 = 769435^2 + 1236924^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122011201001 - 2³ = 2122011200993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2122011201301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43223566 + ... + 43272631.

It is an arithmetic number, because the mean of its divisors is an integer number (530524430433).

Almost surely, 2^{2122011201001} is an apocalyptic number.

It is an amenable number.

2122011201001 is a deficient number, since it is larger than the sum of its proper divisors (86520731).

2122011201001 is an equidigital number, since it uses as much as digits as its factorization.

2122011201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86520730.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2122011201001 its reverse (1001021102212), we get a palindrome (3123032303213).

The spelling of 2122011201001 in words is "two trillion, one hundred twenty-two billion, eleven million, two hundred one thousand, one".