21112131003 has 8 divisors (see below), whose sum is σ = 29805361488. Its totient is φ = 13246827264.

The previous prime is 21112130989. The next prime is 21112131017. The reversal of 21112131003 is 30013121112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21112130989) and next prime (21112131017).

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

It is not a de Polignac number, because 21112131003 - 2⁶ = 21112130939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21112131083) 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, 206981626 + ... + 206981727.

It is an arithmetic number, because the mean of its divisors is an integer number (3725670186).

Almost surely, 2^21112131003 is an apocalyptic number.

21112131003 is a deficient number, since it is larger than the sum of its proper divisors (8693230485).

21112131003 is a wasteful number, since it uses less digits than its factorization.

21112131003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413963373.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 21112131003 its reverse (30013121112), we get a palindrome (51125252115).

The spelling of 21112131003 in words is "twenty-one billion, one hundred twelve million, one hundred thirty-one thousand, three".