2011012221100 has 72 divisors (see below), whose sum is σ = 4494037363200. Its totient is φ = 780760968000.

The previous prime is 2011012221091. The next prime is 2011012221133. The reversal of 2011012221100 is 11222101102.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1691176 + ... + 2623375.

It is an arithmetic number, because the mean of its divisors is an integer number (62417185600).

Almost surely, 2^{2011012221100} is an apocalyptic number.

2011012221100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011012221100 is an abundant number, since it is smaller than the sum of its proper divisors (2483025142100).

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

2011012221100 is a wasteful number, since it uses less digits than its factorization.

2011012221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4314703 (or 4314696 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2011012221100 its reverse (11222101102), we get a palindrome (2022234322202).

The spelling of 2011012221100 in words is "two trillion, eleven billion, twelve million, two hundred twenty-one thousand, one hundred".