201111002010 has 64 divisors (see below), whose sum is σ = 536338748160. Its totient is φ = 53625326400.

The previous prime is 201111001991. The next prime is 201111002023. The reversal of 201111002010 is 10200111102.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 201111001983 and 201111002001.

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, 4842835 + ... + 4884185.

It is an arithmetic number, because the mean of its divisors is an integer number (8380292940).

Almost surely, 2^201111002010 is an apocalyptic number.

201111002010 is an abundant number, since it is smaller than the sum of its proper divisors (335227746150).

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

201111002010 is a wasteful number, since it uses less digits than its factorization.

201111002010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59380 (or 59374 counting only the distinct ones).

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

Adding to 201111002010 its reverse (10200111102), we get a palindrome (211311113112).

It can be divided in two parts, 20111 and 1002010, that added together give a square (1022121 = 1011²).

The spelling of 201111002010 in words is "two hundred one billion, one hundred eleven million, two thousand, ten".