121222121220201 has 16 divisors (see below), whose sum is σ = 172443502490688. Its totient is φ = 75480320947200.

The previous prime is 121222121220169. The next prime is 121222121220257. The reversal of 121222121220201 is 102022121222121.

It is not a de Polignac number, because 121222121220201 - 2⁵ = 121222121220169 is a prime.

It is a super-2 number, since 2×121222121220201² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121222121220281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9072147280 + ... + 9072160641.

It is an arithmetic number, because the mean of its divisors is an integer number (10777718905668).

Almost surely, 2^{121222121220201} is an apocalyptic number.

It is an amenable number.

121222121220201 is a deficient number, since it is larger than the sum of its proper divisors (51221381270487).

121222121220201 is a wasteful number, since it uses less digits than its factorization.

121222121220201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18144308072.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 121222121220201 its reverse (102022121222121), we get a palindrome (223244242442322).

The spelling of 121222121220201 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred twenty thousand, two hundred one".