1421311100243 has 16 divisors (see below), whose sum is σ = 1439534653440. Its totient is φ = 1403217108000.

The previous prime is 1421311100233. The next prime is 1421311100347. The reversal of 1421311100243 is 3420011131241.

It is a cyclic number.

It is not a de Polignac number, because 1421311100243 - 2¹⁴ = 1421311083859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421311100213) 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, 32193338 + ... + 32237456.

It is an arithmetic number, because the mean of its divisors is an integer number (89970915840).

Almost surely, 2^{1421311100243} is an apocalyptic number.

1421311100243 is a deficient number, since it is larger than the sum of its proper divisors (18223553197).

1421311100243 is a wasteful number, since it uses less digits than its factorization.

1421311100243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45578.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 1421311100243 its reverse (3420011131241), we get a palindrome (4841322231484).

The spelling of 1421311100243 in words is "one trillion, four hundred twenty-one billion, three hundred eleven million, one hundred thousand, two hundred forty-three".