2001211120038 has 32 divisors (see below), whose sum is σ = 4415430170592. Its totient is φ = 600738796800.

The previous prime is 2001211120003. The next prime is 2001211120039. The reversal of 2001211120038 is 8300211121002.

It is a junction number, because it is equal to n+sod(n) for n = 2001211119996 and 2001211120023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001211120039) 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 15 ways as a sum of consecutive naturals, for example, 312881593 + ... + 312887988.

It is an arithmetic number, because the mean of its divisors is an integer number (137982192831).

Almost surely, 2^{2001211120038} is an apocalyptic number.

2001211120038 is an abundant number, since it is smaller than the sum of its proper divisors (2414219050554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001211120038 is a wasteful number, since it uses less digits than its factorization.

2001211120038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625769640.

The product of its (nonzero) digits is 192, while the sum is 21.

The spelling of 2001211120038 in words is "two trillion, one billion, two hundred eleven million, one hundred twenty thousand, thirty-eight".