121100021221222 has 8 divisors (see below), whose sum is σ = 181655351582616. Its totient is φ = 60548237360352.

The previous prime is 121100021221183. The next prime is 121100021221247. The reversal of 121100021221222 is 222122120001121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 121100021221222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 886539763 + ... + 886676350.

It is an arithmetic number, because the mean of its divisors is an integer number (22706918947827).

Almost surely, 2^{121100021221222} is an apocalyptic number.

121100021221222 is a deficient number, since it is larger than the sum of its proper divisors (60555330361394).

121100021221222 is a wasteful number, since it uses less digits than its factorization.

121100021221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773250262.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121100021221222 its reverse (222122120001121), we get a palindrome (343222141222343).

The spelling of 121100021221222 in words is "one hundred twenty-one trillion, one hundred billion, twenty-one million, two hundred twenty-one thousand, two hundred twenty-two".