21203422222 has 8 divisors (see below), whose sum is σ = 32831105472. Its totient is φ = 10259720400.

The previous prime is 21203422213. The next prime is 21203422231. The reversal of 21203422222 is 22222430212.

21203422222 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (21203422213) and next prime (21203422231).

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

It is a super-2 number, since 2×21203422222² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21203422193 and 21203422202.

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, 170995279 + ... + 170995402.

It is an arithmetic number, because the mean of its divisors is an integer number (4103888184).

Almost surely, 2^21203422222 is an apocalyptic number.

21203422222 is a deficient number, since it is larger than the sum of its proper divisors (11627683250).

21203422222 is a wasteful number, since it uses less digits than its factorization.

21203422222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341990714.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 21203422222 its reverse (22222430212), we get a palindrome (43425852434).

It can be divided in two parts, 212034 and 22222, that added together give a 4-th power (234256 = 22⁴).

The spelling of 21203422222 in words is "twenty-one billion, two hundred three million, four hundred twenty-two thousand, two hundred twenty-two".