1621352234103 has 16 divisors (see below), whose sum is σ = 2470747211520. Its totient is φ = 926443777536.

The previous prime is 1621352234077. The next prime is 1621352234129. The reversal of 1621352234103 is 3014322531261.

It is an interprime number because it is at equal distance from previous prime (1621352234077) and next prime (1621352234129).

It is not a de Polignac number, because 1621352234103 - 2¹² = 1621352230007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1621352234153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1336825 + ... + 2242722.

It is an arithmetic number, because the mean of its divisors is an integer number (154421700720).

Almost surely, 2^{1621352234103} is an apocalyptic number.

1621352234103 is a deficient number, since it is larger than the sum of its proper divisors (849394977417).

1621352234103 is a wasteful number, since it uses less digits than its factorization.

1621352234103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3601126.

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 1621352234103 its reverse (3014322531261), we get a palindrome (4635674765364).

The spelling of 1621352234103 in words is "one trillion, six hundred twenty-one billion, three hundred fifty-two million, two hundred thirty-four thousand, one hundred three".