223121451121131 has 4 divisors (see below), whose sum is σ = 297495268161512. Its totient is φ = 148747634080752.

The previous prime is 223121451121117. The next prime is 223121451121199. The reversal of 223121451121131 is 131121154121322.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 223121451121131 - 2⁹ = 223121451120619 is a prime.

It is a super-3 number, since 3×223121451121131³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223121451141131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37186908520186 + ... + 37186908520191.

It is an arithmetic number, because the mean of its divisors is an integer number (74373817040378).

Almost surely, 2^{223121451121131} is an apocalyptic number.

223121451121131 is a deficient number, since it is larger than the sum of its proper divisors (74373817040381).

223121451121131 is an equidigital number, since it uses as much as digits as its factorization.

223121451121131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74373817040380.

The product of its digits is 2880, while the sum is 30.

The spelling of 223121451121131 in words is "two hundred twenty-three trillion, one hundred twenty-one billion, four hundred fifty-one million, one hundred twenty-one thousand, one hundred thirty-one".