1011212120101 has 8 divisors (see below), whose sum is σ = 1024188475520. Its totient is φ = 998240169888.

The previous prime is 1011212120071. The next prime is 1011212120159. The reversal of 1011212120101 is 1010212121101.

It is a happy number.

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 1011212120101 - 2¹³ = 1011212111909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011212120201) 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, 638016 + ... + 1558681.

It is an arithmetic number, because the mean of its divisors is an integer number (128023559440).

Almost surely, 2^{1011212120101} is an apocalyptic number.

It is an amenable number.

1011212120101 is a deficient number, since it is larger than the sum of its proper divisors (12976355419).

1011212120101 is an equidigital number, since it uses as much as digits as its factorization.

1011212120101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2202603.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1011212120101 its reverse (1010212121101), we get a palindrome (2021424241202).

It can be divided in two parts, 101121 and 2120101, that added together give a palindrome (2221222).

The spelling of 1011212120101 in words is "one trillion, eleven billion, two hundred twelve million, one hundred twenty thousand, one hundred one".