1222111000121 has 8 divisors (see below), whose sum is σ = 1351475179104. Its totient is φ = 1095790684320.

The previous prime is 1222111000109. The next prime is 1222111000127. The reversal of 1222111000121 is 1210001112221.

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 1222111000121 - 2¹⁰ = 1222110999097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222111000096 and 1222111000105.

It is not an unprimeable number, because it can be changed into a prime (1222111000127) 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, 760964951 + ... + 760966556.

It is an arithmetic number, because the mean of its divisors is an integer number (168934397388).

Almost surely, 2^{1222111000121} is an apocalyptic number.

1222111000121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222111000121 is a deficient number, since it is larger than the sum of its proper divisors (129364178983).

1222111000121 is a wasteful number, since it uses less digits than its factorization.

1222111000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1521931591.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1222111000121 its reverse (1210001112221), we get a palindrome (2432112112342).

The spelling of 1222111000121 in words is "one trillion, two hundred twenty-two billion, one hundred eleven million, one hundred twenty-one", and thus it is an aban number.