30021142122 has 24 divisors (see below), whose sum is σ = 65055371940. Its totient is φ = 10005576000.

The previous prime is 30021142121. The next prime is 30021142153. The reversal of 30021142122 is 22124112003.

It is a happy number.

30021142122 is a `hidden beast` number, since 30 + 0 + 211 + 421 + 2 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 26788196241 + 3232945881 = 163671^2 + 56859^2 .

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 = 30021142095 and 30021142104.

It is not an unprimeable number, because it can be changed into a prime (30021142121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6904 + ... + 245132.

Almost surely, 2^30021142122 is an apocalyptic number.

30021142122 is an abundant number, since it is smaller than the sum of its proper divisors (35034229818).

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

30021142122 is a wasteful number, since it uses less digits than its factorization.

30021142122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245238 (or 245235 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 30021142122 its reverse (22124112003), we get a palindrome (52145254125).

The spelling of 30021142122 in words is "thirty billion, twenty-one million, one hundred forty-two thousand, one hundred twenty-two".