20231101223221 has 16 divisors (see below), whose sum is σ = 24203262025728. Its totient is φ = 16545198625200.

The previous prime is 20231101223197. The next prime is 20231101223317. The reversal of 20231101223221 is 12232210113202.

It is a de Polignac number, because none of the positive numbers 2^k-20231101223221 is a prime.

It is a super-2 number, since 2×20231101223221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20231101223192 and 20231101223201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20231101223521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 656540095 + ... + 656570908.

It is an arithmetic number, because the mean of its divisors is an integer number (1512703876608).

Almost surely, 2^{20231101223221} is an apocalyptic number.

It is an amenable number.

20231101223221 is a deficient number, since it is larger than the sum of its proper divisors (3972160802507).

20231101223221 is a wasteful number, since it uses less digits than its factorization.

20231101223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313111112.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 20231101223221 its reverse (12232210113202), we get a palindrome (32463311336423).

The spelling of 20231101223221 in words is "twenty trillion, two hundred thirty-one billion, one hundred one million, two hundred twenty-three thousand, two hundred twenty-one".