30312020012220 has 96 divisors (see below), whose sum is σ = 94435223500800. Its totient is φ = 8071962944832.

The previous prime is 30312020012171. The next prime is 30312020012233. The reversal of 30312020012220 is 2221002021303.

30312020012220 is a `hidden beast` number, since 30 + 312 + 0 + 200 + 122 + 2 + 0 = 666.

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 = 30312020012193 and 30312020012202.

It is a congruent number.

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, 38647464 + ... + 39423983.

It is an arithmetic number, because the mean of its divisors is an integer number (983700244800).

Almost surely, 2^{30312020012220} is an apocalyptic number.

30312020012220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30312020012220 is an abundant number, since it is smaller than the sum of its proper divisors (64123203488580).

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

30312020012220 is a wasteful number, since it uses less digits than its factorization.

30312020012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78072184 (or 78072176 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 30312020012220 its reverse (2221002021303), we get a palindrome (32533022033523).

The spelling of 30312020012220 in words is "thirty trillion, three hundred twelve billion, twenty million, twelve thousand, two hundred twenty".