20010102332221 has 4 divisors (see below), whose sum is σ = 20880106781472. Its totient is φ = 19140097882972.

The previous prime is 20010102332189. The next prime is 20010102332249. The reversal of 20010102332221 is 12223320101002.

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 20010102332221 - 2⁵ = 20010102332189 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 (20010102332281) 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, 435002224591 + ... + 435002224636.

It is an arithmetic number, because the mean of its divisors is an integer number (5220026695368).

Almost surely, 2^{20010102332221} is an apocalyptic number.

It is an amenable number.

20010102332221 is a deficient number, since it is larger than the sum of its proper divisors (870004449251).

20010102332221 is an equidigital number, since it uses as much as digits as its factorization.

20010102332221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870004449250.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20010102332221 its reverse (12223320101002), we get a palindrome (32233422433223).

The spelling of 20010102332221 in words is "twenty trillion, ten billion, one hundred two million, three hundred thirty-two thousand, two hundred twenty-one".