1121212001 has 8 divisors (see below), whose sum is σ = 1379953344. Its totient is φ = 887112720.

The previous prime is 1121211991. The next prime is 1121212013. The reversal of 1121212001 is 1002121211.

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

It is not a de Polignac number, because 1121212001 - 2¹⁰ = 1121210977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121212601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6160415 + ... + 6160596.

It is an arithmetic number, because the mean of its divisors is an integer number (172494168).

Almost surely, 2^1121212001 is an apocalyptic number.

It is an amenable number.

1121212001 is a deficient number, since it is larger than the sum of its proper divisors (258741343).

1121212001 is a wasteful number, since it uses less digits than its factorization.

1121212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12321031.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1121212001 is about 33484.5038935923. The cubic root of 1121212001 is about 1038.8732869964.

Adding to 1121212001 its reverse (1002121211), we get a palindrome (2123333212).

The spelling of 1121212001 in words is "one billion, one hundred twenty-one million, two hundred twelve thousand, one".