21452411313102 has 128 divisors (see below), whose sum is σ = 54802063282176. Its totient is φ = 5435589600000.

The previous prime is 21452411313049. The next prime is 21452411313107. The reversal of 21452411313102 is 20131311425412.

It is a super-2 number, since 2×21452411313102² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21452411313102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21452411313107) 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, 201698077 + ... + 201804407.

It is an arithmetic number, because the mean of its divisors is an integer number (428141119392).

Almost surely, 2^{21452411313102} is an apocalyptic number.

21452411313102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 21452411313102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27401031641088).

21452411313102 is an abundant number, since it is smaller than the sum of its proper divisors (33349651969074).

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

21452411313102 is a wasteful number, since it uses less digits than its factorization.

21452411313102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117046.

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 21452411313102 its reverse (20131311425412), we get a palindrome (41583722738514).

The spelling of 21452411313102 in words is "twenty-one trillion, four hundred fifty-two billion, four hundred eleven million, three hundred thirteen thousand, one hundred two".