21003220130 has 32 divisors (see below), whose sum is σ = 40371056640. Its totient is φ = 7849920960.

The previous prime is 21003220127. The next prime is 21003220151. The reversal of 21003220130 is 3102230012.

It is a happy number.

It is a super-2 number, since 2×21003220130² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1159154 + ... + 1177133.

It is an arithmetic number, because the mean of its divisors is an integer number (1261595520).

Almost surely, 2^21003220130 is an apocalyptic number.

21003220130 is a deficient number, since it is larger than the sum of its proper divisors (19367836510).

21003220130 is a wasteful number, since it uses less digits than its factorization.

21003220130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2336354.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21003220130 its reverse (3102230012), we get a palindrome (24105450142).

The spelling of 21003220130 in words is "twenty-one billion, three million, two hundred twenty thousand, one hundred thirty".