1222000210121 has 4 divisors (see below), whose sum is σ = 1222016437200. Its totient is φ = 1221983983044.

The previous prime is 1222000210103. The next prime is 1222000210129. The reversal of 1222000210121 is 1210120002221.

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 a de Polignac number, because none of the positive numbers 2^k-1222000210121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1222000210096 and 1222000210105.

It is not an unprimeable number, because it can be changed into a prime (1222000210129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8000051 + ... + 8151368.

It is an arithmetic number, because the mean of its divisors is an integer number (305504109300).

Almost surely, 2^{1222000210121} is an apocalyptic number.

It is an amenable number.

1222000210121 is a deficient number, since it is larger than the sum of its proper divisors (16227079).

1222000210121 is an equidigital number, since it uses as much as digits as its factorization.

1222000210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16227078.

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

Adding to 1222000210121 its reverse (1210120002221), we get a palindrome (2432120212342).

The spelling of 1222000210121 in words is "one trillion, two hundred twenty-two billion, two hundred ten thousand, one hundred twenty-one".