2102233041221 has 4 divisors (see below), whose sum is σ = 2102516483052. Its totient is φ = 2101949599392.

The previous prime is 2102233041211. The next prime is 2102233041229. The reversal of 2102233041221 is 1221403322012.

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 1227098985025 + 875134056196 = 1107745^2 + 935486^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102233041221 - 2¹⁸ = 2102232779077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102233041229) 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, 141709790 + ... + 141724623.

It is an arithmetic number, because the mean of its divisors is an integer number (525629120763).

Almost surely, 2^{2102233041221} is an apocalyptic number.

It is an amenable number.

2102233041221 is a deficient number, since it is larger than the sum of its proper divisors (283441831).

2102233041221 is an equidigital number, since it uses as much as digits as its factorization.

2102233041221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283441830.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 2102233041221 its reverse (1221403322012), we get a palindrome (3323636363233).

The spelling of 2102233041221 in words is "two trillion, one hundred two billion, two hundred thirty-three million, forty-one thousand, two hundred twenty-one".