20002110021002 has 4 divisors (see below), whose sum is σ = 30003165031506. Its totient is φ = 10001055010500.

The previous prime is 20002110020983. The next prime is 20002110021037. The reversal of 20002110021002 is 20012001120002.

It is a happy number.

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., 11150717454361 + 8851392566641 = 3339269^2 + 2975129^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000527505249 + ... + 5000527505252.

Almost surely, 2^{20002110021002} is an apocalyptic number.

20002110021002 is a deficient number, since it is larger than the sum of its proper divisors (10001055010504).

20002110021002 is a wasteful number, since it uses less digits than its factorization.

20002110021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10001055010503.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20002110021002 its reverse (20012001120002), we get a palindrome (40014111141004).

The spelling of 20002110021002 in words is "twenty trillion, two billion, one hundred ten million, twenty-one thousand, two".