121210122222222 has 64 divisors (see below), whose sum is σ = 268777977712128. Its totient is φ = 36135038160000.

The previous prime is 121210122222143. The next prime is 121210122222269. The reversal of 121210122222222 is 222222221012121.

It is a happy number.

121210122222222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 121210122222192 and 121210122222201.

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, 56862154 + ... + 58955277.

It is an arithmetic number, because the mean of its divisors is an integer number (4199655901752).

Almost surely, 2^{121210122222222} is an apocalyptic number.

121210122222222 is an abundant number, since it is smaller than the sum of its proper divisors (147567855489906).

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

121210122222222 is a wasteful number, since it uses less digits than its factorization.

121210122222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115817705.

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

Adding to 121210122222222 its reverse (222222221012121), we get a palindrome (343432343234343).

The spelling of 121210122222222 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty-two".