21112031002 has 8 divisors (see below), whose sum is σ = 31909787712. Its totient is φ = 10475435100.

The previous prime is 21112030999. The next prime is 21112031011. The reversal of 21112031002 is 20013021112.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40289874 + ... + 40290397.

It is an arithmetic number, because the mean of its divisors is an integer number (3988723464).

Almost surely, 2^21112031002 is an apocalyptic number.

21112031002 is a deficient number, since it is larger than the sum of its proper divisors (10797756710).

21112031002 is a wasteful number, since it uses less digits than its factorization.

21112031002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80580404.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21112031002 its reverse (20013021112), we get a palindrome (41125052114).

The spelling of 21112031002 in words is "twenty-one billion, one hundred twelve million, thirty-one thousand, two".