12121123101 has 16 divisors (see below), whose sum is σ = 16695943680. Its totient is φ = 7813935360.

The previous prime is 12121123081. The next prime is 12121123193. The reversal of 12121123101 is 10132112121.

It is not a de Polignac number, because 12121123101 - 2⁶ = 12121123037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121323101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69321 + ... + 170433.

It is an arithmetic number, because the mean of its divisors is an integer number (1043496480).

Almost surely, 2^12121123101 is an apocalyptic number.

It is an amenable number.

12121123101 is a deficient number, since it is larger than the sum of its proper divisors (4574820579).

12121123101 is a wasteful number, since it uses less digits than its factorization.

12121123101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102436.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 12121123101 its reverse (10132112121), we get a palindrome (22253235222).

The spelling of 12121123101 in words is "twelve billion, one hundred twenty-one million, one hundred twenty-three thousand, one hundred one".