20002120202122 has 8 divisors (see below), whose sum is σ = 30003201171396. Its totient is φ = 10001053144992.

The previous prime is 20002120202081. The next prime is 20002120202189. The reversal of 20002120202122 is 22120202120002.

It can be written as a sum of positive squares in 2 ways, for example, as 19587537459961 + 414582742161 = 4425781^2 + 643881^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20002120202096 and 20002120202105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1597948 + ... + 6523624.

Almost surely, 2^{20002120202122} is an apocalyptic number.

20002120202122 is a deficient number, since it is larger than the sum of its proper divisors (10001080969274).

20002120202122 is a wasteful number, since it uses less digits than its factorization.

20002120202122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6956072.

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

Adding to 20002120202122 its reverse (22120202120002), we get a palindrome (42122322322124).

The spelling of 20002120202122 in words is "twenty trillion, two billion, one hundred twenty million, two hundred two thousand, one hundred twenty-two".