121210122210121 has 8 divisors (see below), whose sum is σ = 140873749784640. Its totient is φ = 102133468593168.

The previous prime is 121210122210113. The next prime is 121210122210169. The reversal of 121210122210121 is 121012221012121.

It is a happy number.

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 121210122210121 - 2³ = 121210122210113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121210122210181) 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, 146743488946 + ... + 146743489771.

It is an arithmetic number, because the mean of its divisors is an integer number (17609218723080).

Almost surely, 2^{121210122210121} is an apocalyptic number.

It is an amenable number.

121210122210121 is a deficient number, since it is larger than the sum of its proper divisors (19663627574519).

121210122210121 is an equidigital number, since it uses as much as digits as its factorization.

121210122210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293486978783.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121210122210121 its reverse (121012221012121), we get a palindrome (242222343222242).

The spelling of 121210122210121 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred twenty-two million, two hundred ten thousand, one hundred twenty-one".