30221020404540 has 720 divisors, whose sum is σ = 117175519913760. Its totient is φ = 6501244861440.

The previous prime is 30221020404461. The next prime is 30221020404569. The reversal of 30221020404540 is 4540402012203.

30221020404540 is a `hidden beast` number, since 3 + 0 + 2 + 2 + 1 + 0 + 204 + 0 + 454 + 0 = 666.

It is a super-2 number, since 2×30221020404540² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 389955195 + ... + 390032685.

It is an arithmetic number, because the mean of its divisors is an integer number (162743777658).

Almost surely, 2^{30221020404540} is an apocalyptic number.

30221020404540 is a gapful number since it is divisible by the number (30) 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 30221020404540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58587759956880).

30221020404540 is an abundant number, since it is smaller than the sum of its proper divisors (86954499509220).

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

30221020404540 is a wasteful number, since it uses less digits than its factorization.

30221020404540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77577 (or 77525 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 30221020404540 its reverse (4540402012203), we get a palindrome (34761422416743).

The spelling of 30221020404540 in words is "thirty trillion, two hundred twenty-one billion, twenty million, four hundred four thousand, five hundred forty".