1421103133555 has 16 divisors (see below), whose sum is σ = 1968237895104. Its totient is φ = 964822492800.

The previous prime is 1421103133553. The next prime is 1421103133559. The reversal of 1421103133555 is 5553313011241.

It is not a de Polignac number, because 1421103133555 - 2¹ = 1421103133553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1421103133555.

It is not an unprimeable number, because it can be changed into a prime (1421103133553) 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, 201001152 + ... + 201008221.

It is an arithmetic number, because the mean of its divisors is an integer number (123014868444).

Almost surely, 2^{1421103133555} is an apocalyptic number.

1421103133555 is a deficient number, since it is larger than the sum of its proper divisors (547134761549).

1421103133555 is a wasteful number, since it uses less digits than its factorization.

1421103133555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402009486.

The product of its (nonzero) digits is 27000, while the sum is 34.

Adding to 1421103133555 its reverse (5553313011241), we get a palindrome (6974416144796).

The spelling of 1421103133555 in words is "one trillion, four hundred twenty-one billion, one hundred three million, one hundred thirty-three thousand, five hundred fifty-five".