120100212105 has 32 divisors (see below), whose sum is σ = 205044954240. Its totient is φ = 59850938880.

The previous prime is 120100212079. The next prime is 120100212107. The reversal of 120100212105 is 501212001021.

It is not a de Polignac number, because 120100212105 - 2¹¹ = 120100210057 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (120100212107) 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, 2865526 + ... + 2907135.

It is an arithmetic number, because the mean of its divisors is an integer number (6407654820).

Almost surely, 2^120100212105 is an apocalyptic number.

120100212105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120100212105 is a deficient number, since it is larger than the sum of its proper divisors (84944742135).

120100212105 is a wasteful number, since it uses less digits than its factorization.

120100212105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5772761.

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

Adding to 120100212105 its reverse (501212001021), we get a palindrome (621312213126).

The spelling of 120100212105 in words is "one hundred twenty billion, one hundred million, two hundred twelve thousand, one hundred five".