2001211121102 has 64 divisors (see below), whose sum is σ = 3244624447680. Its totient is φ = 923902930944.

The previous prime is 2001211121089. The next prime is 2001211121123. The reversal of 2001211121102 is 2011211121002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24902378 + ... + 24982610.

It is an arithmetic number, because the mean of its divisors is an integer number (50697256995).

Almost surely, 2^{2001211121102} is an apocalyptic number.

2001211121102 is a deficient number, since it is larger than the sum of its proper divisors (1243413326578).

2001211121102 is a wasteful number, since it uses less digits than its factorization.

2001211121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80517.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2001211121102 its reverse (2011211121002), we get a palindrome (4012422242104).

The spelling of 2001211121102 in words is "two trillion, one billion, two hundred eleven million, one hundred twenty-one thousand, one hundred two".