30121032200220 has 144 divisors (see below), whose sum is σ = 98417905945632. Its totient is φ = 7412709911040.

The previous prime is 30121032200219. The next prime is 30121032200251. The reversal of 30121032200220 is 2200223012103.

30121032200220 is a `hidden beast` number, since 3 + 0 + 1 + 210 + 32 + 200 + 220 = 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 = 30121032200193 and 30121032200202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8761035 + ... + 11704605.

It is an arithmetic number, because the mean of its divisors is an integer number (683457680178).

Almost surely, 2^{30121032200220} is an apocalyptic number.

30121032200220 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 30121032200220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49208952972816).

30121032200220 is an abundant number, since it is smaller than the sum of its proper divisors (68296873745412).

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

30121032200220 is a wasteful number, since it uses less digits than its factorization.

30121032200220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2947972 (or 2947967 counting only the distinct ones).

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

Adding to 30121032200220 its reverse (2200223012103), we get a palindrome (32321255212323).

The spelling of 30121032200220 in words is "thirty trillion, one hundred twenty-one billion, thirty-two million, two hundred thousand, two hundred twenty".