20233120022221 has 8 divisors (see below), whose sum is σ = 20276220201624. Its totient is φ = 20190040879680.

The previous prime is 20233120022191. The next prime is 20233120022231. The reversal of 20233120022221 is 12222002133202.

It can be written as a sum of positive squares in 4 ways, for example, as 680707502500 + 19552412519721 = 825050^2 + 4421811^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20233120022221 - 2¹¹ = 20233120020173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20233120022192 and 20233120022201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20233120022231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3332830 + ... + 7181503.

It is an arithmetic number, because the mean of its divisors is an integer number (2534527525203).

Almost surely, 2^{20233120022221} is an apocalyptic number.

It is an amenable number.

20233120022221 is a deficient number, since it is larger than the sum of its proper divisors (43100179403).

20233120022221 is a wasteful number, since it uses less digits than its factorization.

20233120022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10518431.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20233120022221 its reverse (12222002133202), we get a palindrome (32455122155423).

The spelling of 20233120022221 in words is "twenty trillion, two hundred thirty-three billion, one hundred twenty million, twenty-two thousand, two hundred twenty-one".