11202121123 has 8 divisors (see below), whose sum is σ = 11273269392. Its totient is φ = 11131117536.

The previous prime is 11202121103. The next prime is 11202121163. The reversal of 11202121123 is 32112120211.

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 11202121123 - 2¹³ = 11202112931 is a prime.

It is a super-2 number, since 2×11202121123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11202121097 and 11202121106.

It is not an unprimeable number, because it can be changed into a prime (11202121103) 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, 121336 + ... + 192682.

It is an arithmetic number, because the mean of its divisors is an integer number (1409158674).

Almost surely, 2^11202121123 is an apocalyptic number.

11202121123 is a deficient number, since it is larger than the sum of its proper divisors (71148269).

11202121123 is an equidigital number, since it uses as much as digits as its factorization.

11202121123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72341.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11202121123 its reverse (32112120211), we get a palindrome (43314241334).

The spelling of 11202121123 in words is "eleven billion, two hundred two million, one hundred twenty-one thousand, one hundred twenty-three".