21004225242000 has 960 divisors, whose sum is σ = 92545347218688. Its totient is φ = 4028774400000.

The previous prime is 21004225241983. The next prime is 21004225242041. The reversal of 21004225242000 is 24252240012.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 41792200 + ... + 42291800.

Almost surely, 2^{21004225242000} is an apocalyptic number.

21004225242000 is a gapful number since it is divisible by the number (20) 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 21004225242000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46272673609344).

21004225242000 is an abundant number, since it is smaller than the sum of its proper divisors (71541121976688).

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

21004225242000 is a wasteful number, since it uses less digits than its factorization.

21004225242000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499665 (or 499642 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

Adding to 21004225242000 its reverse (24252240012), we get a palindrome (21028477482012).

The spelling of 21004225242000 in words is "twenty-one trillion, four billion, two hundred twenty-five million, two hundred forty-two thousand".