20010100022002 has 4 divisors (see below), whose sum is σ = 30015150033006. Its totient is φ = 10005050011000.

The previous prime is 20010100021991. The next prime is 20010100022023. The reversal of 20010100022002 is 20022000101002.

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., 16017372713241 + 3992727308761 = 4002171^2 + 1998181^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20010100022002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5002525005499 + ... + 5002525005502.

Almost surely, 2^{20010100022002} is an apocalyptic number.

20010100022002 is a deficient number, since it is larger than the sum of its proper divisors (10005050011004).

20010100022002 is a wasteful number, since it uses less digits than its factorization.

20010100022002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10005050011003.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20010100022002 its reverse (20022000101002), we get a palindrome (40032100123004).

The spelling of 20010100022002 in words is "twenty trillion, ten billion, one hundred million, twenty-two thousand, two".