20230121222221 has 8 divisors (see below), whose sum is σ = 20850297807584. Its totient is φ = 19613808666000.

The previous prime is 20230121222219. The next prime is 20230121222249. The reversal of 20230121222221 is 12222212103202.

It is a happy number.

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 20230121222221 - 2¹ = 20230121222219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20230121222192 and 20230121222201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20230121222251) 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, 965996655 + ... + 966017596.

It is an arithmetic number, because the mean of its divisors is an integer number (2606287225948).

Almost surely, 2^{20230121222221} is an apocalyptic number.

It is an amenable number.

20230121222221 is a deficient number, since it is larger than the sum of its proper divisors (620176585363).

20230121222221 is a wasteful number, since it uses less digits than its factorization.

20230121222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932014571.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 20230121222221 its reverse (12222212103202), we get a palindrome (32452333325423).

The spelling of 20230121222221 in words is "twenty trillion, two hundred thirty billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty-one".