20002120111002 has 16 divisors (see below), whose sum is σ = 40004284428000. Its totient is φ = 6667366002672.

The previous prime is 20002120110983. The next prime is 20002120111021. The reversal of 20002120111002 is 20011102120002.

It is an interprime number because it is at equal distance from previous prime (20002120110983) and next prime (20002120111021).

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, 8552124 + ... + 10636872.

It is an arithmetic number, because the mean of its divisors is an integer number (2500267776750).

Almost surely, 2^{20002120111002} is an apocalyptic number.

20002120111002 is an abundant number, since it is smaller than the sum of its proper divisors (20002164316998).

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

20002120111002 is a wasteful number, since it uses less digits than its factorization.

20002120111002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3683837.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20002120111002 its reverse (20011102120002), we get a palindrome (40013222231004).

The spelling of 20002120111002 in words is "twenty trillion, two billion, one hundred twenty million, one hundred eleven thousand, two".