121210111221101 has 8 divisors (see below), whose sum is σ = 138845762510784. Its totient is φ = 103654440210240.

The previous prime is 121210111221079. The next prime is 121210111221137. The reversal of 121210111221101 is 101122111012121.

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 121210111221101 - 2⁴² = 116812064709997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121210111221101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210111241101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19995066455 + ... + 19995072516.

It is an arithmetic number, because the mean of its divisors is an integer number (17355720313848).

Almost surely, 2^{121210111221101} is an apocalyptic number.

It is an amenable number.

121210111221101 is a deficient number, since it is larger than the sum of its proper divisors (17635651289683).

121210111221101 is an equidigital number, since it uses as much as digits as its factorization.

121210111221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39990139411.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121210111221101 its reverse (101122111012121), we get a palindrome (222332222233222).

The spelling of 121210111221101 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred eleven million, two hundred twenty-one thousand, one hundred one".