21030102101232 has 320 divisors, whose sum is σ = 70433944320000. Its totient is φ = 6005323328256.

The previous prime is 21030102101159. The next prime is 21030102101237. The reversal of 21030102101232 is 23210120103012.

21030102101232 is a `hidden beast` number, since 210 + 3 + 0 + 10 + 210 + 1 + 232 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21030102101237) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 278384938 + ... + 278460470.

It is an arithmetic number, because the mean of its divisors is an integer number (220106076000).

Almost surely, 2^{21030102101232} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21030102101232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35216972160000).

21030102101232 is an abundant number, since it is smaller than the sum of its proper divisors (49403842218768).

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

21030102101232 is a wasteful number, since it uses less digits than its factorization.

21030102101232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77450 (or 77424 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21030102101232 its reverse (23210120103012), we get a palindrome (44240222204244).

The spelling of 21030102101232 in words is "twenty-one trillion, thirty billion, one hundred two million, one hundred one thousand, two hundred thirty-two".