20121233110 has 16 divisors (see below), whose sum is σ = 39510785232. Its totient is φ = 7316812000.

The previous prime is 20121233101. The next prime is 20121233137. The reversal of 20121233110 is 1133212102.

It is a congruent number.

It is an unprimeable number.

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, 91460041 + ... + 91460260.

It is an arithmetic number, because the mean of its divisors is an integer number (2469424077).

Almost surely, 2^20121233110 is an apocalyptic number.

20121233110 is a deficient number, since it is larger than the sum of its proper divisors (19389552122).

20121233110 is a wasteful number, since it uses less digits than its factorization.

20121233110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182920319.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20121233110 its reverse (1133212102), we get a palindrome (21254445212).

The spelling of 20121233110 in words is "twenty billion, one hundred twenty-one million, two hundred thirty-three thousand, one hundred ten".