11213121023 has 8 divisors (see below), whose sum is σ = 12600698208. Its totient is φ = 9900548064.

The previous prime is 11213121019. The next prime is 11213121067. The reversal of 11213121023 is 32012131211.

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 11213121023 - 2² = 11213121019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11213120992 and 11213121010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11213121323) 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, 18750740 + ... + 18751337.

It is an arithmetic number, because the mean of its divisors is an integer number (1575087276).

Almost surely, 2^11213121023 is an apocalyptic number.

11213121023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11213121023 is a deficient number, since it is larger than the sum of its proper divisors (1387577185).

11213121023 is a wasteful number, since it uses less digits than its factorization.

11213121023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37502113.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11213121023 its reverse (32012131211), we get a palindrome (43225252234).

The spelling of 11213121023 in words is "eleven billion, two hundred thirteen million, one hundred twenty-one thousand, twenty-three".