11020161570121 has 4 divisors (see below), whose sum is σ = 12021994440144. Its totient is φ = 10018328700100.

The previous prime is 11020161570113. The next prime is 11020161570139. The reversal of 11020161570121 is 12107516102011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11020161570121 - 2³ = 11020161570113 is a prime.

It is a super-2 number, since 2×11020161570121² (a number of 27 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 11020161570121.

It is not an unprimeable number, because it can be changed into a prime (11020161570151) 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 3 ways as a sum of consecutive naturals, for example, 500916434995 + ... + 500916435016.

It is an arithmetic number, because the mean of its divisors is an integer number (3005498610036).

Almost surely, 2^{11020161570121} is an apocalyptic number.

11020161570121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11020161570121 is a deficient number, since it is larger than the sum of its proper divisors (1001832870023).

11020161570121 is a wasteful number, since it uses less digits than its factorization.

11020161570121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001832870022.

The product of its (nonzero) digits is 840, while the sum is 28.

Adding to 11020161570121 its reverse (12107516102011), we get a palindrome (23127677672132).

The spelling of 11020161570121 in words is "eleven trillion, twenty billion, one hundred sixty-one million, five hundred seventy thousand, one hundred twenty-one".