1212332221001 has 32 divisors (see below), whose sum is σ = 1363088466432. Its totient is φ = 1068681600000.

The previous prime is 1212332220989. The next prime is 1212332221007. The reversal of 1212332221001 is 1001222332121.

It is a cyclic number.

It is not a de Polignac number, because 1212332221001 - 2²² = 1212328026697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212332221007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51443261 + ... + 51466821.

It is an arithmetic number, because the mean of its divisors is an integer number (42596514576).

Almost surely, 2^{1212332221001} is an apocalyptic number.

1212332221001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1212332221001 is a deficient number, since it is larger than the sum of its proper divisors (150756245431).

1212332221001 is a wasteful number, since it uses less digits than its factorization.

1212332221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24305.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1212332221001 its reverse (1001222332121), we get a palindrome (2213554553122).

The spelling of 1212332221001 in words is "one trillion, two hundred twelve billion, three hundred thirty-two million, two hundred twenty-one thousand, one".