21151601230 has 32 divisors (see below), whose sum is σ = 40300675200. Its totient is φ = 7970552352.

The previous prime is 21151601203. The next prime is 21151601257. The reversal of 21151601230 is 3210615112.

It is a happy number.

21151601230 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (21151601203) and next prime (21151601257).

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, 276952 + ... + 344971.

It is an arithmetic number, because the mean of its divisors is an integer number (1259396100).

Almost surely, 2^21151601230 is an apocalyptic number.

21151601230 is a deficient number, since it is larger than the sum of its proper divisors (19149073970).

21151601230 is a wasteful number, since it uses less digits than its factorization.

21151601230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622128.

The product of its (nonzero) digits is 360, while the sum is 22.

The spelling of 21151601230 in words is "twenty-one billion, one hundred fifty-one million, six hundred one thousand, two hundred thirty".