21034122030 has 24 divisors (see below), whose sum is σ = 54688717512. Its totient is φ = 5609099184.

The previous prime is 21034122029. The next prime is 21034122059. The reversal of 21034122030 is 3022143012.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21034121994 and 21034122012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116856144 + ... + 116856323.

It is an arithmetic number, because the mean of its divisors is an integer number (2278696563).

Almost surely, 2^21034122030 is an apocalyptic number.

21034122030 is an abundant number, since it is smaller than the sum of its proper divisors (33654595482).

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

21034122030 is a wasteful number, since it uses less digits than its factorization.

21034122030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233712480 (or 233712477 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21034122030 its reverse (3022143012), we get a palindrome (24056265042).

The spelling of 21034122030 in words is "twenty-one billion, thirty-four million, one hundred twenty-two thousand, thirty".