20213221212230 has 16 divisors (see below), whose sum is σ = 36556233248304. Its totient is φ = 8046969581280.

The previous prime is 20213221212227. The next prime is 20213221212269. The reversal of 20213221212230 is 3221212231202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20213221212196 and 20213221212205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4789860737 + ... + 4789864956.

It is an arithmetic number, because the mean of its divisors is an integer number (2284764578019).

Almost surely, 2^{20213221212230} is an apocalyptic number.

20213221212230 is a deficient number, since it is larger than the sum of its proper divisors (16343012036074).

20213221212230 is a wasteful number, since it uses less digits than its factorization.

20213221212230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9579725911.

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

Adding to 20213221212230 its reverse (3221212231202), we get a palindrome (23434433443432).

The spelling of 20213221212230 in words is "twenty trillion, two hundred thirteen billion, two hundred twenty-one million, two hundred twelve thousand, two hundred thirty".