1222210000121 has 4 divisors (see below), whose sum is σ = 1333320000144. Its totient is φ = 1111100000100.

The previous prime is 1222210000117. The next prime is 1222210000127. The reversal of 1222210000121 is 1210000122221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1222210000121 - 2² = 1222210000117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222210000096 and 1222210000105.

It is not an unprimeable number, because it can be changed into a prime (1222210000127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55554999995 + ... + 55555000016.

It is an arithmetic number, because the mean of its divisors is an integer number (333330000036).

Almost surely, 2^{1222210000121} is an apocalyptic number.

1222210000121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222210000121 is a deficient number, since it is larger than the sum of its proper divisors (111110000023).

1222210000121 is a wasteful number, since it uses less digits than its factorization.

1222210000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111110000022.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1222210000121 its reverse (1210000122221), we get a palindrome (2432210122342).

The spelling of 1222210000121 in words is "one trillion, two hundred twenty-two billion, two hundred ten million, one hundred twenty-one", and thus it is an aban number.