30251541222120 has 128 divisors (see below), whose sum is σ = 91707383053440. Its totient is φ = 7982482406400.

The previous prime is 30251541222061. The next prime is 30251541222151. The reversal of 30251541222120 is 2122214515203.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 19782007 + ... + 21256313.

It is an arithmetic number, because the mean of its divisors is an integer number (716463930105).

Almost surely, 2^{30251541222120} is an apocalyptic number.

30251541222120 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 30251541222120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45853691526720).

30251541222120 is an abundant number, since it is smaller than the sum of its proper divisors (61455841831320).

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

30251541222120 is a wasteful number, since it uses less digits than its factorization.

30251541222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476115 (or 1476111 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 30251541222120 its reverse (2122214515203), we get a palindrome (32373755737323).

The spelling of 30251541222120 in words is "thirty trillion, two hundred fifty-one billion, five hundred forty-one million, two hundred twenty-two thousand, one hundred twenty".