20002120122002 has 4 divisors (see below), whose sum is σ = 30003180183006. Its totient is φ = 10001060061000.

The previous prime is 20002120121999. The next prime is 20002120122013. The reversal of 20002120122002 is 20022102120002.

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., 17682100690081 + 2320019431921 = 4205009^2 + 1523161^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000530030499 + ... + 5000530030502.

Almost surely, 2^{20002120122002} is an apocalyptic number.

20002120122002 is a deficient number, since it is larger than the sum of its proper divisors (10001060061004).

20002120122002 is a wasteful number, since it uses less digits than its factorization.

20002120122002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10001060061003.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20002120122002 its reverse (20022102120002), we get a palindrome (40024222242004).

The spelling of 20002120122002 in words is "twenty trillion, two billion, one hundred twenty million, one hundred twenty-two thousand, two".