21030001030 has 32 divisors (see below), whose sum is σ = 39333961728. Its totient is φ = 8086716000.

The previous prime is 21030000989. The next prime is 21030001049. The reversal of 21030001030 is 3010003012.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 21030000998 and 21030001016.

It is a congruent number.

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, 177822 + ... + 271441.

It is an arithmetic number, because the mean of its divisors is an integer number (1229186304).

Almost surely, 2^21030001030 is an apocalyptic number.

21030001030 is a deficient number, since it is larger than the sum of its proper divisors (18303960698).

21030001030 is a wasteful number, since it uses less digits than its factorization.

21030001030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449452.

The product of its (nonzero) digits is 18, while the sum is 10.

Adding to 21030001030 its reverse (3010003012), we get a palindrome (24040004042).

The spelling of 21030001030 in words is "twenty-one billion, thirty million, one thousand, thirty".