121200221220222 has 32 divisors (see below), whose sum is σ = 244402398842112. Its totient is φ = 40067506516544.

The previous prime is 121200221220173. The next prime is 121200221220263. The reversal of 121200221220222 is 222022122002121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136077903 + ... + 136965674.

It is an arithmetic number, because the mean of its divisors is an integer number (7637574963816).

Almost surely, 2^{121200221220222} is an apocalyptic number.

121200221220222 is an abundant number, since it is smaller than the sum of its proper divisors (123202177621890).

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

121200221220222 is a wasteful number, since it uses less digits than its factorization.

121200221220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273044192.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 121200221220222 its reverse (222022122002121), we get a palindrome (343222343222343).

The spelling of 121200221220222 in words is "one hundred twenty-one trillion, two hundred billion, two hundred twenty-one million, two hundred twenty thousand, two hundred twenty-two".