121100121222 has 8 divisors (see below), whose sum is σ = 242200242456. Its totient is φ = 40366707072.

The previous prime is 121100121217. The next prime is 121100121223. The reversal of 121100121222 is 222121001121.

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

121100121222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121100121223) 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, 10091676763 + ... + 10091676774.

It is an arithmetic number, because the mean of its divisors is an integer number (30275030307).

Almost surely, 2^121100121222 is an apocalyptic number.

121100121222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121100121222 is a wasteful number, since it uses less digits than its factorization.

121100121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20183353542.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121100121222 its reverse (222121001121), we get a palindrome (343221122343).

The spelling of 121100121222 in words is "one hundred twenty-one billion, one hundred million, one hundred twenty-one thousand, two hundred twenty-two".