20002120220122 has 16 divisors (see below), whose sum is σ = 31769423124840. Its totient is φ = 9412362505728.

The previous prime is 20002120220111. The next prime is 20002120220143. The reversal of 20002120220122 is 22102202120002.

It can be written as a sum of positive squares in 4 ways, for example, as 10382824173121 + 9619296047001 = 3222239^2 + 3101499^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20002120220096 and 20002120220105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11685747 + ... + 13287622.

Almost surely, 2^{20002120220122} is an apocalyptic number.

20002120220122 is a deficient number, since it is larger than the sum of its proper divisors (11767302904718).

20002120220122 is a wasteful number, since it uses less digits than its factorization.

20002120220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24996945.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20002120220122 its reverse (22102202120002), we get a palindrome (42104322340124).

The spelling of 20002120220122 in words is "twenty trillion, two billion, one hundred twenty million, two hundred twenty thousand, one hundred twenty-two".