20202120002122 has 4 divisors (see below), whose sum is σ = 30303180003186. Its totient is φ = 10101060001060.

The previous prime is 20202120002107. The next prime is 20202120002167. The reversal of 20202120002122 is 22120002120202.

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., 15041358265761 + 5160761736361 = 3878319^2 + 2271731^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20202120002096 and 20202120002105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050530000529 + ... + 5050530000532.

Almost surely, 2^{20202120002122} is an apocalyptic number.

20202120002122 is a deficient number, since it is larger than the sum of its proper divisors (10101060001064).

20202120002122 is a wasteful number, since it uses less digits than its factorization.

20202120002122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10101060001063.

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

Adding to 20202120002122 its reverse (22120002120202), we get a palindrome (42322122122324).

The spelling of 20202120002122 in words is "twenty trillion, two hundred two billion, one hundred twenty million, two thousand, one hundred twenty-two".