1021200011011 has 8 divisors (see below), whose sum is σ = 1084386659760. Its totient is φ = 958359591168.

The previous prime is 1021200010979. The next prime is 1021200011021. The reversal of 1021200011011 is 1101100021201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021200011011 - 2⁵ = 1021200010979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021200011021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86551146 + ... + 86562943.

It is an arithmetic number, because the mean of its divisors is an integer number (135548332470).

Almost surely, 2^{1021200011011} is an apocalyptic number.

1021200011011 is a deficient number, since it is larger than the sum of its proper divisors (63186648749).

1021200011011 is a wasteful number, since it uses less digits than its factorization.

1021200011011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173114453.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1021200011011 its reverse (1101100021201), we get a palindrome (2122300032212).

The spelling of 1021200011011 in words is "one trillion, twenty-one billion, two hundred million, eleven thousand, eleven".