30220120044 has 72 divisors (see below), whose sum is σ = 77893452000. Its totient is φ = 9876153600.

The previous prime is 30220119971. The next prime is 30220120061. The reversal of 30220120044 is 44002102203.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 30220119999 and 30220120026.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 660832 + ... + 705080.

It is an arithmetic number, because the mean of its divisors is an integer number (1081853500).

Almost surely, 2^30220120044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30220120044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38946726000).

30220120044 is an abundant number, since it is smaller than the sum of its proper divisors (47673331956).

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

30220120044 is a wasteful number, since it uses less digits than its factorization.

30220120044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44631 (or 44626 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 30220120044 its reverse (44002102203), we get a palindrome (74222222247).

The spelling of 30220120044 in words is "thirty billion, two hundred twenty million, one hundred twenty thousand, forty-four".