21023012301102 has 192 divisors, whose sum is σ = 55144106035200. Its totient is φ = 5877659241216.

The previous prime is 21023012301101. The next prime is 21023012301127. The reversal of 21023012301102 is 20110321032012.

21023012301102 is a `hidden beast` number, since 21 + 0 + 2 + 301 + 230 + 110 + 2 = 666.

It is a super-2 number, since 2×21023012301102² (a number of 27 digits) contains 22 as substring.

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 (21023012301101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1207031098 + ... + 1207048514.

It is an arithmetic number, because the mean of its divisors is an integer number (287208885600).

Almost surely, 2^{21023012301102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21023012301102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27572053017600).

21023012301102 is an abundant number, since it is smaller than the sum of its proper divisors (34121093734098).

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

21023012301102 is a wasteful number, since it uses less digits than its factorization.

21023012301102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25037 (or 25025 counting only the distinct ones).

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

Adding to 21023012301102 its reverse (20110321032012), we get a palindrome (41133333333114).

The spelling of 21023012301102 in words is "twenty-one trillion, twenty-three billion, twelve million, three hundred one thousand, one hundred two".