121211212012222 has 16 divisors (see below), whose sum is σ = 184331447587152. Its totient is φ = 59772065843200.

The previous prime is 121211212012183. The next prime is 121211212012273. The reversal of 121211212012222 is 222210212112121.

It is a junction number, because it is equal to n+sod(n) for n = 121211212012193 and 121211212012202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1167371248 + ... + 1167475075.

It is an arithmetic number, because the mean of its divisors is an integer number (11520715474197).

Almost surely, 2^{121211212012222} is an apocalyptic number.

121211212012222 is a deficient number, since it is larger than the sum of its proper divisors (63120235574930).

121211212012222 is a wasteful number, since it uses less digits than its factorization.

121211212012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2334846683.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 121211212012222 its reverse (222210212112121), we get a palindrome (343421424124343).

The spelling of 121211212012222 in words is "one hundred twenty-one trillion, two hundred eleven billion, two hundred twelve million, twelve thousand, two hundred twenty-two".