121122221220222 has 64 divisors (see below), whose sum is σ = 267664959489024. Its totient is φ = 36344422033920.

The previous prime is 121122221220191. The next prime is 121122221220263. The reversal of 121122221220222 is 222022122221121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121122221220192 and 121122221220201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31487847 + ... + 35124477.

It is an arithmetic number, because the mean of its divisors is an integer number (4182264992016).

Almost surely, 2^{121122221220222} is an apocalyptic number.

121122221220222 is an abundant number, since it is smaller than the sum of its proper divisors (146542738268802).

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

121122221220222 is a wasteful number, since it uses less digits than its factorization.

121122221220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3650873.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 121122221220222 its reverse (222022122221121), we get a palindrome (343144343441343).

The spelling of 121122221220222 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, two hundred twenty-one million, two hundred twenty thousand, two hundred twenty-two".