20121153035 has 4 divisors (see below), whose sum is σ = 24145383648. Its totient is φ = 16096922424.

The previous prime is 20121153001. The next prime is 20121153049. The reversal of 20121153035 is 53035112102.

It is a happy number.

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 20121153035 - 2¹⁶ = 20121087499 is a prime.

It is a super-2 number, since 2×20121153035² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20121153035.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2012115299 + ... + 2012115308.

It is an arithmetic number, because the mean of its divisors is an integer number (6036345912).

Almost surely, 2^20121153035 is an apocalyptic number.

20121153035 is a deficient number, since it is larger than the sum of its proper divisors (4024230613).

20121153035 is an equidigital number, since it uses as much as digits as its factorization.

20121153035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4024230612.

The product of its (nonzero) digits is 900, while the sum is 23.

Adding to 20121153035 its reverse (53035112102), we get a palindrome (73156265137).

The spelling of 20121153035 in words is "twenty billion, one hundred twenty-one million, one hundred fifty-three thousand, thirty-five".