1021100212011 has 16 divisors (see below), whose sum is σ = 1486747641600. Its totient is φ = 618219042720.

The previous prime is 1021100212007. The next prime is 1021100212043. The reversal of 1021100212011 is 1102120011201.

It is not a de Polignac number, because 1021100212011 - 2² = 1021100212007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021100212081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15706336 + ... + 15771213.

It is an arithmetic number, because the mean of its divisors is an integer number (92921727600).

Almost surely, 2^{1021100212011} is an apocalyptic number.

1021100212011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1021100212011 is a deficient number, since it is larger than the sum of its proper divisors (465647429589).

1021100212011 is a wasteful number, since it uses less digits than its factorization.

1021100212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31478546.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1021100212011 its reverse (1102120011201), we get a palindrome (2123220223212).

The spelling of 1021100212011 in words is "one trillion, twenty-one billion, one hundred million, two hundred twelve thousand, eleven".