20121112030 has 32 divisors (see below), whose sum is σ = 38298210048. Its totient is φ = 7598841600.

The previous prime is 20121111979. The next prime is 20121112069. The reversal of 20121112030 is 3021112102.

It is a self number, because there is not a number n which added to its sum of digits gives 20121112030.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 778837 + ... + 804256.

It is an arithmetic number, because the mean of its divisors is an integer number (1196819064).

Almost surely, 2^20121112030 is an apocalyptic number.

20121112030 is a deficient number, since it is larger than the sum of its proper divisors (18177098018).

20121112030 is a wasteful number, since it uses less digits than its factorization.

20121112030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583172.

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

Adding to 20121112030 its reverse (3021112102), we get a palindrome (23142224132).

The spelling of 20121112030 in words is "twenty billion, one hundred twenty-one million, one hundred twelve thousand, thirty".