21112111030 has 8 divisors (see below), whose sum is σ = 38001799872. Its totient is φ = 8444844408.

The previous prime is 21112111021. The next prime is 21112111051. The reversal of 21112111030 is 3011121112.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21112111030.

It is a congruent number.

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, 1055605542 + ... + 1055605561.

It is an arithmetic number, because the mean of its divisors is an integer number (4750224984).

Almost surely, 2^21112111030 is an apocalyptic number.

21112111030 is a deficient number, since it is larger than the sum of its proper divisors (16889688842).

21112111030 is a wasteful number, since it uses less digits than its factorization.

21112111030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111211110.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 21112111030 its reverse (3011121112), we get a palindrome (24123232142).

The spelling of 21112111030 in words is "twenty-one billion, one hundred twelve million, one hundred eleven thousand, thirty".