2101221133433 has 4 divisors (see below), whose sum is σ = 2101226131200. Its totient is φ = 2101216135668.

The previous prime is 2101221133423. The next prime is 2101221133441. The reversal of 2101221133433 is 3343311221012.

It is a happy number.

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 2101221133433 - 2⁶ = 2101221133369 is a prime.

It is a super-2 number, since 2×2101221133433² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101221133423) 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, 1803785 + ... + 2730582.

It is an arithmetic number, because the mean of its divisors is an integer number (525306532800).

Almost surely, 2^{2101221133433} is an apocalyptic number.

It is an amenable number.

2101221133433 is a deficient number, since it is larger than the sum of its proper divisors (4997767).

2101221133433 is an equidigital number, since it uses as much as digits as its factorization.

2101221133433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4997766.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 2101221133433 its reverse (3343311221012), we get a palindrome (5444532354445).

The spelling of 2101221133433 in words is "two trillion, one hundred one billion, two hundred twenty-one million, one hundred thirty-three thousand, four hundred thirty-three".