1021001211006 has 64 divisors (see below), whose sum is σ = 2345610839040. Its totient is φ = 290230640640.

The previous prime is 1021001210993. The next prime is 1021001211067. The reversal of 1021001211006 is 6001121001201.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8999796 + ... + 9112536.

It is an arithmetic number, because the mean of its divisors is an integer number (36650169360).

Almost surely, 2^{1021001211006} is an apocalyptic number.

1021001211006 is an abundant number, since it is smaller than the sum of its proper divisors (1324609628034).

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

1021001211006 is a wasteful number, since it uses less digits than its factorization.

1021001211006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113849.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1021001211006 its reverse (6001121001201), we get a palindrome (7022122212207).

The spelling of 1021001211006 in words is "one trillion, twenty-one billion, one million, two hundred eleven thousand, six".