21434020222 has 32 divisors (see below), whose sum is σ = 32867822304. Its totient is φ = 10481280000.

The previous prime is 21434020171. The next prime is 21434020247. The reversal of 21434020222 is 22202043412.

It is a junction number, because it is equal to n+sod(n) for n = 21434020193 and 21434020202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8665978 + ... + 8668450.

It is an arithmetic number, because the mean of its divisors is an integer number (1027119447).

Almost surely, 2^21434020222 is an apocalyptic number.

21434020222 is a deficient number, since it is larger than the sum of its proper divisors (11433802082).

21434020222 is a wasteful number, since it uses less digits than its factorization.

21434020222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3084.

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

Adding to 21434020222 its reverse (22202043412), we get a palindrome (43636063634).

The spelling of 21434020222 in words is "twenty-one billion, four hundred thirty-four million, twenty thousand, two hundred twenty-two".