1210020101011 has 4 divisors (see below), whose sum is σ = 1211937724624. Its totient is φ = 1208102477400.

The previous prime is 1210020100951. The next prime is 1210020101057. The reversal of 1210020101011 is 1101010200121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1210020101011 - 2²⁵ = 1209986546579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210020101071) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 958810860 + ... + 958812121.

It is an arithmetic number, because the mean of its divisors is an integer number (302984431156).

Almost surely, 2^{1210020101011} is an apocalyptic number.

1210020101011 is a deficient number, since it is larger than the sum of its proper divisors (1917623613).

1210020101011 is an equidigital number, since it uses as much as digits as its factorization.

1210020101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917623612.

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

Adding to 1210020101011 its reverse (1101010200121), we get a palindrome (2311030301132).

The spelling of 1210020101011 in words is "one trillion, two hundred ten billion, twenty million, one hundred one thousand, eleven".