21001134030 has 32 divisors (see below), whose sum is σ = 50410193184. Its totient is φ = 5599472256.

The previous prime is 21001134001. The next prime is 21001134041. The reversal of 21001134030 is 3043110012.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 169332 + ... + 265848.

It is an arithmetic number, because the mean of its divisors is an integer number (1575318537).

Almost surely, 2^21001134030 is an apocalyptic number.

21001134030 is an abundant number, since it is smaller than the sum of its proper divisors (29409059154).

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

21001134030 is a wasteful number, since it uses less digits than its factorization.

21001134030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103780.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21001134030 its reverse (3043110012), we get a palindrome (24044244042).

The spelling of 21001134030 in words is "twenty-one billion, one million, one hundred thirty-four thousand, thirty".