121211121120001 has 8 divisors (see below), whose sum is σ = 132230495620800. Its totient is φ = 110191776897840.

The previous prime is 121211121119993. The next prime is 121211121120041. The reversal of 121211121120001 is 100021121112121.

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

It is not a de Polignac number, because 121211121120001 - 2³ = 121211121119993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121211121120041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1247155 + ... + 15619783.

It is an arithmetic number, because the mean of its divisors is an integer number (16528811952600).

Almost surely, 2^{121211121120001} is an apocalyptic number.

121211121120001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121211121120001 is a deficient number, since it is larger than the sum of its proper divisors (11019374500799).

121211121120001 is a wasteful number, since it uses less digits than its factorization.

121211121120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15139319.

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

Adding to 121211121120001 its reverse (100021121112121), we get a palindrome (221232242232122).

The spelling of 121211121120001 in words is "one hundred twenty-one trillion, two hundred eleven billion, one hundred twenty-one million, one hundred twenty thousand, one".