21342020222 has 8 divisors (see below), whose sum is σ = 32020304400. Its totient is φ = 10668585424.

The previous prime is 21342020213. The next prime is 21342020233. The reversal of 21342020222 is 22202024312.

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

It is a junction number, because it is equal to n+sod(n) for n = 21342020194 and 21342020203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1201322 + ... + 1218957.

It is an arithmetic number, because the mean of its divisors is an integer number (4002538050).

Almost surely, 2^21342020222 is an apocalyptic number.

21342020222 is a deficient number, since it is larger than the sum of its proper divisors (10678284178).

21342020222 is a wasteful number, since it uses less digits than its factorization.

21342020222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2424690.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 21342020222 its reverse (22202024312), we get a palindrome (43544044534).

It can be divided in two parts, 21 and 342020222, that added together give a palindrome (342020243).

The spelling of 21342020222 in words is "twenty-one billion, three hundred forty-two million, twenty thousand, two hundred twenty-two".