21042222024 has 32 divisors (see below), whose sum is σ = 52614900000. Its totient is φ = 7012828032.

The previous prime is 21042222017. The next prime is 21042222031. The reversal of 21042222024 is 42022224012.

It is an interprime number because it is at equal distance from previous prime (21042222017) and next prime (21042222031).

It is a super-3 number, since 3×21042222024³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65427 + ... + 215325.

It is an arithmetic number, because the mean of its divisors is an integer number (1644215625).

Almost surely, 2^21042222024 is an apocalyptic number.

21042222024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21042222024 is an abundant number, since it is smaller than the sum of its proper divisors (31572677976).

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

21042222024 is a wasteful number, since it uses less digits than its factorization.

21042222024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155757 (or 155753 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 21042222024 its reverse (42022224012), we get a palindrome (63064446036).

The spelling of 21042222024 in words is "twenty-one billion, forty-two million, two hundred twenty-two thousand, twenty-four".