12121012101 has 8 divisors (see below), whose sum is σ = 17630563104. Its totient is φ = 7346067920.

The previous prime is 12121012091. The next prime is 12121012139. The reversal of 12121012101 is 10121012121.

12121012101 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12121012101 - 2⁵ = 12121012069 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121012201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183651666 + ... + 183651731.

It is an arithmetic number, because the mean of its divisors is an integer number (2203820388).

Almost surely, 2^12121012101 is an apocalyptic number.

12121012101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12121012101 is a deficient number, since it is larger than the sum of its proper divisors (5509551003).

12121012101 is a wasteful number, since it uses less digits than its factorization.

12121012101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367303411.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12121012101 its reverse (10121012121), we get a palindrome (22242024222).

The spelling of 12121012101 in words is "twelve billion, one hundred twenty-one million, twelve thousand, one hundred one".