121211112220201 has 8 divisors (see below), whose sum is σ = 125135161280000. Its totient is φ = 117287938984320.

The previous prime is 121211112220183. The next prime is 121211112220213. The reversal of 121211112220201 is 102022211112121.

It is a happy number.

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

It is not a de Polignac number, because 121211112220201 - 2²¹ = 121211110123049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121211112220271) 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, 218674701 + ... + 219228298.

It is an arithmetic number, because the mean of its divisors is an integer number (15641895160000).

Almost surely, 2^{121211112220201} is an apocalyptic number.

It is an amenable number.

121211112220201 is a deficient number, since it is larger than the sum of its proper divisors (3924049059799).

121211112220201 is an equidigital number, since it uses as much as digits as its factorization.

121211112220201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437911959.

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

Adding to 121211112220201 its reverse (102022211112121), we get a palindrome (223233323332322).

The spelling of 121211112220201 in words is "one hundred twenty-one trillion, two hundred eleven billion, one hundred twelve million, two hundred twenty thousand, two hundred one".