3230121161520 has 480 divisors, whose sum is σ = 12210508477440. Its totient is φ = 758489333760.

The previous prime is 3230121161479. The next prime is 3230121161587. The reversal of 3230121161520 is 251611210323.

3230121161520 is a `hidden beast` number, since 3 + 2 + 3 + 0 + 1 + 21 + 1 + 615 + 20 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 36062551 + ... + 36152009.

It is an arithmetic number, because the mean of its divisors is an integer number (25438559328).

Almost surely, 2^{3230121161520} is an apocalyptic number.

3230121161520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3230121161520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6105254238720).

3230121161520 is an abundant number, since it is smaller than the sum of its proper divisors (8980387315920).

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

3230121161520 is a wasteful number, since it uses less digits than its factorization.

3230121161520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89633 (or 89624 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 3230121161520 its reverse (251611210323), we get a palindrome (3481732371843).

The spelling of 3230121161520 in words is "three trillion, two hundred thirty billion, one hundred twenty-one million, one hundred sixty-one thousand, five hundred twenty".