2001211120212 has 48 divisors (see below), whose sum is σ = 4716187521024. Its totient is φ = 660432780000.

The previous prime is 2001211120211. The next prime is 2001211120219. The reversal of 2001211120212 is 2120211121002.

It is a junction number, because it is equal to n+sod(n) for n = 2001211120191 and 2001211120200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001211120211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1585414 + ... + 2552637.

It is an arithmetic number, because the mean of its divisors is an integer number (98253906688).

Almost surely, 2^{2001211120212} is an apocalyptic number.

It is an amenable number.

2001211120212 is an abundant number, since it is smaller than the sum of its proper divisors (2714976400812).

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

2001211120212 is a wasteful number, since it uses less digits than its factorization.

2001211120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4138460 (or 4138458 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2001211120212 its reverse (2120211121002), we get a palindrome (4121422241214).

The spelling of 2001211120212 in words is "two trillion, one billion, two hundred eleven million, one hundred twenty thousand, two hundred twelve".