30121202112220 has 24 divisors (see below), whose sum is σ = 66004721151264. Its totient is φ = 11524633851456.

The previous prime is 30121202112217. The next prime is 30121202112227. The reversal of 30121202112220 is 2221120212103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30121202112227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32740436619 + ... + 32740437538.

It is an arithmetic number, because the mean of its divisors is an integer number (2750196714636).

Almost surely, 2^{30121202112220} is an apocalyptic number.

It is an amenable number.

30121202112220 is an abundant number, since it is smaller than the sum of its proper divisors (35883519039044).

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

30121202112220 is a wasteful number, since it uses less digits than its factorization.

30121202112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65480874189 (or 65480874187 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 30121202112220 its reverse (2221120212103), we get a palindrome (32342322324323).

The spelling of 30121202112220 in words is "thirty trillion, one hundred twenty-one billion, two hundred two million, one hundred twelve thousand, two hundred twenty".