21000201030 has 24 divisors (see below), whose sum is σ = 54600522912. Its totient is φ = 5600053584.

The previous prime is 21000200993. The next prime is 21000201113. The reversal of 21000201030 is 3010200012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

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, 116667694 + ... + 116667873.

It is an arithmetic number, because the mean of its divisors is an integer number (2275021788).

Almost surely, 2^21000201030 is an apocalyptic number.

21000201030 is an abundant number, since it is smaller than the sum of its proper divisors (33600321882).

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

21000201030 is a wasteful number, since it uses less digits than its factorization.

21000201030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233335580 (or 233335577 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 21000201030 its reverse (3010200012), we get a palindrome (24010401042).

The spelling of 21000201030 in words is "twenty-one billion, two hundred one thousand, thirty".