21030330123296 has 48 divisors (see below), whose sum is σ = 45675864781848. Its totient is φ = 9469567027200.

The previous prime is 21030330123293. The next prime is 21030330123331. The reversal of 21030330123296 is 69232103303012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4520573354896 + 16509756768400 = 2126164^2 + 4063220^2 .

It is a super-2 number, since 2×21030330123296² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21030330123293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 616491215 + ... + 616525326.

Almost surely, 2^{21030330123296} is an apocalyptic number.

21030330123296 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

21030330123296 is an abundant number, since it is smaller than the sum of its proper divisors (24645534658552).

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

21030330123296 is a wasteful number, since it uses less digits than its factorization.

21030330123296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233016605 (or 1233016597 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 35.

The spelling of 21030330123296 in words is "twenty-one trillion, thirty billion, three hundred thirty million, one hundred twenty-three thousand, two hundred ninety-six".