21030232331030 has 32 divisors (see below), whose sum is σ = 40854726779328. Its totient is φ = 7748165001600.

The previous prime is 21030232331029. The next prime is 21030232331041. The reversal of 21030232331030 is 3013323203012.

It is a junction number, because it is equal to n+sod(n) for n = 21030232330987 and 21030232331005.

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, 175396706 + ... + 175516565.

It is an arithmetic number, because the mean of its divisors is an integer number (1276710211854).

Almost surely, 2^{21030232331030} is an apocalyptic number.

21030232331030 is a deficient number, since it is larger than the sum of its proper divisors (19824494448298).

21030232331030 is a wasteful number, since it uses less digits than its factorization.

21030232331030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350913752.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21030232331030 its reverse (3013323203012), we get a palindrome (24043555534042).

The spelling of 21030232331030 in words is "twenty-one trillion, thirty billion, two hundred thirty-two million, three hundred thirty-one thousand, thirty".