30312112002122 has 4 divisors (see below), whose sum is σ = 45468168003186. Its totient is φ = 15156056001060.

The previous prime is 30312112002103. The next prime is 30312112002131. The reversal of 30312112002122 is 22120021121303.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18128528733121 + 12183583269001 = 4257761^2 + 3490499^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30312112002094 and 30312112002103.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7578028000529 + ... + 7578028000532.

Almost surely, 2^{30312112002122} is an apocalyptic number.

30312112002122 is a deficient number, since it is larger than the sum of its proper divisors (15156056001064).

30312112002122 is a wasteful number, since it uses less digits than its factorization.

30312112002122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15156056001063.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 30312112002122 its reverse (22120021121303), we get a palindrome (52432133123425).

The spelling of 30312112002122 in words is "thirty trillion, three hundred twelve billion, one hundred twelve million, two thousand, one hundred twenty-two".