2101211212033 has 4 divisors (see below), whose sum is σ = 2102150512980. Its totient is φ = 2100271911088.

The previous prime is 2101211212019. The next prime is 2101211212117. The reversal of 2101211212033 is 3302121121012.

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 1396800150769 + 704411061264 = 1181863^2 + 839292^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101211212033 - 2¹³ = 2101211203841 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2101211212033.

It is not an unprimeable number, because it can be changed into a prime (2101211212433) 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, 469647118 + ... + 469651591.

It is an arithmetic number, because the mean of its divisors is an integer number (525537628245).

Almost surely, 2^{2101211212033} is an apocalyptic number.

It is an amenable number.

2101211212033 is a deficient number, since it is larger than the sum of its proper divisors (939300947).

2101211212033 is an equidigital number, since it uses as much as digits as its factorization.

2101211212033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939300946.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2101211212033 its reverse (3302121121012), we get a palindrome (5403332333045).

The spelling of 2101211212033 in words is "two trillion, one hundred one billion, two hundred eleven million, two hundred twelve thousand, thirty-three".