11388922255381 has 8 divisors (see below), whose sum is σ = 12429550077984. Its totient is φ = 10349172975120.

The previous prime is 11388922255351. The next prime is 11388922255421. The reversal of 11388922255381 is 18355222988311.

It is a happy number.

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 11388922255381 - 2²⁹ = 11388385384469 is a prime.

It is a super-2 number, since 2×11388922255381² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11388922255331) 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, 219608475 + ... + 219660328.

It is an arithmetic number, because the mean of its divisors is an integer number (1553693759748).

Almost surely, 2^{11388922255381} is an apocalyptic number.

11388922255381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11388922255381 is a deficient number, since it is larger than the sum of its proper divisors (1040627822603).

11388922255381 is a wasteful number, since it uses less digits than its factorization.

11388922255381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439271171.

The product of its digits is 8294400, while the sum is 58.

The spelling of 11388922255381 in words is "eleven trillion, three hundred eighty-eight billion, nine hundred twenty-two million, two hundred fifty-five thousand, three hundred eighty-one".