4521213205000 has 40 divisors (see below), whose sum is σ = 10593202551030. Its totient is φ = 1808485280000.

The previous prime is 4521213204983. The next prime is 4521213205001. The reversal of 4521213205000 is 5023121254.

It can be written as a sum of positive squares in 5 ways, for example, as 172081924 + 4521041123076 = 13118^2 + 2126274^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (4521213205001) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 452116321 + ... + 452126320.

Almost surely, 2^{4521213205000} is an apocalyptic number.

4521213205000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4521213205000 is an abundant number, since it is smaller than the sum of its proper divisors (6071989346030).

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

4521213205000 is an equidigital number, since it uses as much as digits as its factorization.

4521213205000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904242667 (or 904242648 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 4521213205000 its reverse (5023121254), we get a palindrome (4526236326254).

The spelling of 4521213205000 in words is "four trillion, five hundred twenty-one billion, two hundred thirteen million, two hundred five thousand".