121220222201 has 8 divisors (see below), whose sum is σ = 130742359944. Its totient is φ = 111726299520.

The previous prime is 121220222173. The next prime is 121220222213. The reversal of 121220222201 is 102222022121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 44668399801 + 76551822400 = 211349^2 + 276680^2 .

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 121220222201 - 2¹⁴ = 121220205817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121220222201.

It is not an unprimeable number, because it can be changed into a prime (121220222701) 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, 7044836 + ... + 7062021.

It is an arithmetic number, because the mean of its divisors is an integer number (16342794993).

Almost surely, 2^121220222201 is an apocalyptic number.

It is an amenable number.

121220222201 is a deficient number, since it is larger than the sum of its proper divisors (9522137743).

121220222201 is a wasteful number, since it uses less digits than its factorization.

121220222201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14107531.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 121220222201 its reverse (102222022121), we get a palindrome (223442244322).

The spelling of 121220222201 in words is "one hundred twenty-one billion, two hundred twenty million, two hundred twenty-two thousand, two hundred one".