211011001002 has 48 divisors (see below), whose sum is σ = 491492626560. Its totient is φ = 65217280896.

The previous prime is 211011001001. The next prime is 211011001007. The reversal of 211011001002 is 200100110112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (211011001001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6547663 + ... + 6579810.

It is an arithmetic number, because the mean of its divisors is an integer number (10239429720).

Almost surely, 2^211011001002 is an apocalyptic number.

211011001002 is an abundant number, since it is smaller than the sum of its proper divisors (280481625558).

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

211011001002 is a wasteful number, since it uses less digits than its factorization.

211011001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13127547 (or 13127544 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 211011001002 its reverse (200100110112), we get a palindrome (411111111114).

The spelling of 211011001002 in words is "two hundred eleven billion, eleven million, one thousand, two".