20001200002122 has 32 divisors (see below), whose sum is σ = 40601915774784. Its totient is φ = 6567159456000.

The previous prime is 20001200002111. The next prime is 20001200002123. The reversal of 20001200002122 is 22120000210002.

It is a junction number, because it is equal to n+sod(n) for n = 20001200002098 and 20001200002107.

It is not an unprimeable number, because it can be changed into a prime (20001200002123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5155372 + ... + 8159672.

It is an arithmetic number, because the mean of its divisors is an integer number (1268809867962).

Almost surely, 2^{20001200002122} is an apocalyptic number.

20001200002122 is an abundant number, since it is smaller than the sum of its proper divisors (20600715772662).

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

20001200002122 is a wasteful number, since it uses less digits than its factorization.

20001200002122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3020934.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20001200002122 its reverse (22120000210002), we get a palindrome (42121200212124).

The spelling of 20001200002122 in words is "twenty trillion, one billion, two hundred million, two thousand, one hundred twenty-two".