22002420234 has 32 divisors (see below), whose sum is σ = 45547770240. Its totient is φ = 7077268800.

The previous prime is 22002420217. The next prime is 22002420239. The reversal of 22002420234 is 43202420022.

It is a super-2 number, since 2×22002420234² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22002420234.

It is not an unprimeable number, because it can be changed into a prime (22002420239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284064 + ... + 353124.

It is an arithmetic number, because the mean of its divisors is an integer number (1423367820).

Almost surely, 2^22002420234 is an apocalyptic number.

22002420234 is an abundant number, since it is smaller than the sum of its proper divisors (23545350006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22002420234 is a wasteful number, since it uses less digits than its factorization.

22002420234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70926.

The product of its (nonzero) digits is 1536, while the sum is 21.

Adding to 22002420234 its reverse (43202420022), we get a palindrome (65204840256).

The spelling of 22002420234 in words is "twenty-two billion, two million, four hundred twenty thousand, two hundred thirty-four".