121200021022222 has 4 divisors (see below), whose sum is σ = 181800031533336. Its totient is φ = 60600010511110.

The previous prime is 121200021022189. The next prime is 121200021022231. The reversal of 121200021022222 is 222220120002121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 121200021022222.

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, 30300005255554 + ... + 30300005255557.

It is an arithmetic number, because the mean of its divisors is an integer number (45450007883334).

Almost surely, 2^{121200021022222} is an apocalyptic number.

121200021022222 is a deficient number, since it is larger than the sum of its proper divisors (60600010511114).

121200021022222 is an equidigital number, since it uses as much as digits as its factorization.

121200021022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60600010511113.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 121200021022222 its reverse (222220120002121), we get a palindrome (343420141024343).

The spelling of 121200021022222 in words is "one hundred twenty-one trillion, two hundred billion, twenty-one million, twenty-two thousand, two hundred twenty-two".