21201301032102 has 96 divisors (see below), whose sum is σ = 49561845671520. Its totient is φ = 6528074826240.

The previous prime is 21201301032077. The next prime is 21201301032137. The reversal of 21201301032102 is 20123010310212.

21201301032102 is a `hidden beast` number, since 21 + 20 + 1 + 301 + 0 + 321 + 0 + 2 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23863888 + ... + 24736364.

It is an arithmetic number, because the mean of its divisors is an integer number (516269225745).

Almost surely, 2^{21201301032102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21201301032102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24780922835760).

21201301032102 is an abundant number, since it is smaller than the sum of its proper divisors (28360544639418).

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

21201301032102 is a wasteful number, since it uses less digits than its factorization.

21201301032102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874278 (or 874275 counting only the distinct ones).

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

Adding to 21201301032102 its reverse (20123010310212), we get a palindrome (41324311342314).

The spelling of 21201301032102 in words is "twenty-one trillion, two hundred one billion, three hundred one million, thirty-two thousand, one hundred two".