20001211011002 has 64 divisors (see below), whose sum is σ = 32663547544320. Its totient is φ = 9130577347584.

The previous prime is 20001211010981. The next prime is 20001211011007. The reversal of 20001211011002 is 20011011210002.

It is not an unprimeable number, because it can be changed into a prime (20001211011007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3190491524 + ... + 3190497792.

It is an arithmetic number, because the mean of its divisors is an integer number (510367930380).

Almost surely, 2^{20001211011002} is an apocalyptic number.

20001211011002 is a deficient number, since it is larger than the sum of its proper divisors (12662336533318).

20001211011002 is a wasteful number, since it uses less digits than its factorization.

20001211011002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8487.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20001211011002 its reverse (20011011210002), we get a palindrome (40012222221004).

The spelling of 20001211011002 in words is "twenty trillion, one billion, two hundred eleven million, eleven thousand, two".