21022433334 has 80 divisors (see below), whose sum is σ = 53865982368. Its totient is φ = 6002978688.

The previous prime is 21022433281. The next prime is 21022433353. The reversal of 21022433334 is 43333422012.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21022433298 and 21022433307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2505354 + ... + 2513730.

Almost surely, 2^21022433334 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21022433334, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26932991184).

21022433334 is an abundant number, since it is smaller than the sum of its proper divisors (32843549034).

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

21022433334 is a wasteful number, since it uses less digits than its factorization.

21022433334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10611 (or 10602 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 21022433334 its reverse (43333422012), we get a palindrome (64355855346).

The spelling of 21022433334 in words is "twenty-one billion, twenty-two million, four hundred thirty-three thousand, three hundred thirty-four".