310121220030 has 64 divisors (see below), whose sum is σ = 749500948800. Its totient is φ = 82120421376.

The previous prime is 310121220011. The next prime is 310121220037. The reversal of 310121220030 is 30022121013.

It is a super-2 number, since 2×310121220030² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 310121219991 and 310121220009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (310121220037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20165424 + ... + 20180796.

It is an arithmetic number, because the mean of its divisors is an integer number (11710952325).

Almost surely, 2^310121220030 is an apocalyptic number.

310121220030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

310121220030 is an abundant number, since it is smaller than the sum of its proper divisors (439379728770).

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

310121220030 is a wasteful number, since it uses less digits than its factorization.

310121220030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20045.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 310121220030 its reverse (30022121013), we get a palindrome (340143341043).

The spelling of 310121220030 in words is "three hundred ten billion, one hundred twenty-one million, two hundred twenty thousand, thirty".