1121212001121 has 16 divisors (see below), whose sum is σ = 1498069104000. Its totient is φ = 745915143168.

The previous prime is 1121212001111. The next prime is 1121212001153. The reversal of 1121212001121 is 1211002121211.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1121212001121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121212001121.

It is not an unprimeable number, because it can be changed into a prime (1121212001111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13896705 + ... + 13977153.

It is an arithmetic number, because the mean of its divisors is an integer number (93629319000).

Almost surely, 2^{1121212001121} is an apocalyptic number.

It is an amenable number.

1121212001121 is a deficient number, since it is larger than the sum of its proper divisors (376857102879).

1121212001121 is an equidigital number, since it uses as much as digits as its factorization.

1121212001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90088.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1121212001121 its reverse (1211002121211), we get a palindrome (2332214122332).

The spelling of 1121212001121 in words is "one trillion, one hundred twenty-one billion, two hundred twelve million, one thousand, one hundred twenty-one".