100112021205 has 32 divisors (see below), whose sum is σ = 183305883648. Its totient is φ = 45704520000.

The previous prime is 100112021201. The next prime is 100112021237. The reversal of 100112021205 is 502120211001.

It is not a de Polignac number, because 100112021205 - 2² = 100112021201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100112021201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 555931 + ... + 713640.

It is an arithmetic number, because the mean of its divisors is an integer number (5728308864).

Almost surely, 2^100112021205 is an apocalyptic number.

100112021205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100112021205 is a deficient number, since it is larger than the sum of its proper divisors (83193862443).

100112021205 is a wasteful number, since it uses less digits than its factorization.

100112021205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270337.

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 100112021205 its reverse (502120211001), we get a palindrome (602232232206).

The spelling of 100112021205 in words is "one hundred billion, one hundred twelve million, twenty-one thousand, two hundred five".