20011001000002 has 16 divisors (see below), whose sum is σ = 30755882719800. Its totient is φ = 9759155512960.

The previous prime is 20011000999999. The next prime is 20011001000027. The reversal of 20011001000002 is 20000010011002.

It can be written as a sum of positive squares in 4 ways, for example, as 17420765044761 + 2590235955241 = 4173819^2 + 1609421^2 .

It is a super-2 number, since 2×20011001000002² (a number of 27 digits) contains 22 as substring.

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, 28505977 + ... + 29199532.

Almost surely, 2^{20011001000002} is an apocalyptic number.

20011001000002 is a deficient number, since it is larger than the sum of its proper divisors (10744881719798).

20011001000002 is a wasteful number, since it uses less digits than its factorization.

20011001000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57709781.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 20011001000002 its reverse (20000010011002), we get a palindrome (40011011011004).

The spelling of 20011001000002 in words is "twenty trillion, eleven billion, one million, two", and thus it is an aban number and an uban number.