1212222010121 has 8 divisors (see below), whose sum is σ = 1216030581024. Its totient is φ = 1208418886080.

The previous prime is 1212222010099. The next prime is 1212222010183. The reversal of 1212222010121 is 1210102222121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212222010121 - 2⁶ = 1212222010057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1212222010121.

It is not an unprimeable number, because it can be changed into a prime (1212222010421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 915680 + ... + 1806353.

It is an arithmetic number, because the mean of its divisors is an integer number (152003822628).

Almost surely, 2^{1212222010121} is an apocalyptic number.

It is an amenable number.

1212222010121 is a deficient number, since it is larger than the sum of its proper divisors (3808570903).

1212222010121 is an equidigital number, since it uses as much as digits as its factorization.

1212222010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2723431.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1212222010121 its reverse (1210102222121), we get a palindrome (2422324232242).

The spelling of 1212222010121 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, ten thousand, one hundred twenty-one".