121201111011222 has 96 divisors (see below), whose sum is σ = 294222758469120. Its totient is φ = 35734384906560.

The previous prime is 121201111011191. The next prime is 121201111011241. The reversal of 121201111011222 is 222110111102121.

It is a happy number.

121201111011222 is a `hidden beast` number, since 121 + 201 + 1 + 110 + 11 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121201111011195 and 121201111011204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 676561779 + ... + 676740897.

It is an arithmetic number, because the mean of its divisors is an integer number (3064820400720).

Almost surely, 2^{121201111011222} is an apocalyptic number.

121201111011222 is an abundant number, since it is smaller than the sum of its proper divisors (173021647457898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121201111011222 is a wasteful number, since it uses less digits than its factorization.

121201111011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271538 (or 271535 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 121201111011222 its reverse (222110111102121), we get a palindrome (343311222113343).

The spelling of 121201111011222 in words is "one hundred twenty-one trillion, two hundred one billion, one hundred eleven million, eleven thousand, two hundred twenty-two".