121100221220222 has 4 divisors (see below), whose sum is σ = 181650331830336. Its totient is φ = 60550110610110.

The previous prime is 121100221220207. The next prime is 121100221220233. The reversal of 121100221220222 is 222022122001121.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 121100221220194 and 121100221220203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30275055305054 + ... + 30275055305057.

It is an arithmetic number, because the mean of its divisors is an integer number (45412582957584).

Almost surely, 2^{121100221220222} is an apocalyptic number.

121100221220222 is a deficient number, since it is larger than the sum of its proper divisors (60550110610114).

121100221220222 is an equidigital number, since it uses as much as digits as its factorization.

121100221220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60550110610113.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 121100221220222 its reverse (222022122001121), we get a palindrome (343122343221343).

The spelling of 121100221220222 in words is "one hundred twenty-one trillion, one hundred billion, two hundred twenty-one million, two hundred twenty thousand, two hundred twenty-two".