1221042132003 has 16 divisors (see below), whose sum is σ = 1638975507840. Its totient is φ = 808581225984.

The previous prime is 1221042131977. The next prime is 1221042132007. The reversal of 1221042132003 is 3002312401221.

It is not a de Polignac number, because 1221042132003 - 2³⁸ = 946164225059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1221042132007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1218501 + ... + 1981622.

It is an arithmetic number, because the mean of its divisors is an integer number (102435969240).

Almost surely, 2^{1221042132003} is an apocalyptic number.

1221042132003 is a deficient number, since it is larger than the sum of its proper divisors (417933375837).

1221042132003 is a wasteful number, since it uses less digits than its factorization.

1221042132003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3200978.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1221042132003 its reverse (3002312401221), we get a palindrome (4223354533224).

The spelling of 1221042132003 in words is "one trillion, two hundred twenty-one billion, forty-two million, one hundred thirty-two thousand, three".