121211212201 has 4 divisors (see below), whose sum is σ = 121216015872. Its totient is φ = 121206408532.

The previous prime is 121211212103. The next prime is 121211212289. The reversal of 121211212201 is 102212112121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121211212201 - 2²⁹ = 120674341289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121211212301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2363785 + ... + 2414518.

It is an arithmetic number, because the mean of its divisors is an integer number (30304003968).

Almost surely, 2^121211212201 is an apocalyptic number.

It is an amenable number.

121211212201 is a deficient number, since it is larger than the sum of its proper divisors (4803671).

121211212201 is an equidigital number, since it uses as much as digits as its factorization.

121211212201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4803670.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121211212201 its reverse (102212112121), we get a palindrome (223423324322).

The spelling of 121211212201 in words is "one hundred twenty-one billion, two hundred eleven million, two hundred twelve thousand, two hundred one".