21342021130 has 32 divisors (see below), whose sum is σ = 40479004800. Its totient is φ = 8079204672.

The previous prime is 21342021061. The next prime is 21342021133. The reversal of 21342021130 is 3112024312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 21342021098 and 21342021107.

It is not an unprimeable number, because it can be changed into a prime (21342021133) 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, 129636 + ... + 243904.

It is an arithmetic number, because the mean of its divisors is an integer number (1264968900).

Almost surely, 2^21342021130 is an apocalyptic number.

21342021130 is a deficient number, since it is larger than the sum of its proper divisors (19136983670).

21342021130 is a wasteful number, since it uses less digits than its factorization.

21342021130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115278.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21342021130 its reverse (3112024312), we get a palindrome (24454045442).

The spelling of 21342021130 in words is "twenty-one billion, three hundred forty-two million, twenty-one thousand, one hundred thirty".