30221254440 has 128 divisors (see below), whose sum is σ = 108486604800. Its totient is φ = 7439074560.

The previous prime is 30221254423. The next prime is 30221254463. The reversal of 30221254440 is 4445212203.

30221254440 is a `hidden beast` number, since 3 + 0 + 2 + 212 + 5 + 4 + 440 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1062216 + ... + 1090295.

It is an arithmetic number, because the mean of its divisors is an integer number (847551600).

Almost surely, 2^30221254440 is an apocalyptic number.

30221254440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30221254440 is an abundant number, since it is smaller than the sum of its proper divisors (78265350360).

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

30221254440 is a wasteful number, since it uses less digits than its factorization.

30221254440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2152544 (or 2152534 counting only the distinct ones).

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

Adding to 30221254440 its reverse (4445212203), we get a palindrome (34666466643).

The spelling of 30221254440 in words is "thirty billion, two hundred twenty-one million, two hundred fifty-four thousand, four hundred forty".