12101254522500 has 480 divisors, whose sum is σ = 41552580617856. Its totient is φ = 2701440000000.

The previous prime is 12101254522463. The next prime is 12101254522579. The reversal of 12101254522500 is 522545210121.

It is a super-2 number, since 2×12101254522500² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 451509100 + ... + 451535900.

Almost surely, 2^{12101254522500} is an apocalyptic number.

12101254522500 is a gapful number since it is divisible by the number (10) 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 12101254522500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20776290308928).

12101254522500 is an abundant number, since it is smaller than the sum of its proper divisors (29451326095356).

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

12101254522500 is a wasteful number, since it uses less digits than its factorization.

12101254522500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27273 (or 27256 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 30.

Adding to 12101254522500 its reverse (522545210121), we get a palindrome (12623799732621).

The spelling of 12101254522500 in words is "twelve trillion, one hundred one billion, two hundred fifty-four million, five hundred twenty-two thousand, five hundred".