11072152121 has 8 divisors (see below), whose sum is σ = 11456785800. Its totient is φ = 10687707520.

The previous prime is 11072152103. The next prime is 11072152123. The reversal of 11072152121 is 12125127011.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5568144400 + 5504007721 = 74620^2 + 74189^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11072152121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11072152123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77501 + ... + 167781.

It is an arithmetic number, because the mean of its divisors is an integer number (1432098225).

Almost surely, 2^11072152121 is an apocalyptic number.

It is an amenable number.

11072152121 is a deficient number, since it is larger than the sum of its proper divisors (384633679).

11072152121 is an equidigital number, since it uses as much as digits as its factorization.

11072152121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94539.

The product of its (nonzero) digits is 280, while the sum is 23.

Adding to 11072152121 its reverse (12125127011), we get a palindrome (23197279132).

The spelling of 11072152121 in words is "eleven billion, seventy-two million, one hundred fifty-two thousand, one hundred twenty-one".