210001012011 has 36 divisors (see below), whose sum is σ = 353295610200. Its totient is φ = 119852042688.

The previous prime is 210001011991. The next prime is 210001012051. The reversal of 210001012011 is 110210100012.

It is a happy number.

It is not a de Polignac number, because 210001012011 - 2¹⁰ = 210001010987 is a prime.

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 = 210001011984 and 210001012002.

It is not an unprimeable number, because it can be changed into a prime (210001012051) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 62460 + ... + 651078.

It is an arithmetic number, because the mean of its divisors is an integer number (9813766950).

Almost surely, 2^210001012011 is an apocalyptic number.

210001012011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

210001012011 is a deficient number, since it is larger than the sum of its proper divisors (143294598189).

210001012011 is a wasteful number, since it uses less digits than its factorization.

210001012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589448 (or 589438 counting only the distinct ones).

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

Adding to 210001012011 its reverse (110210100012), we get a palindrome (320211112023).

The spelling of 210001012011 in words is "two hundred ten billion, one million, twelve thousand, eleven".