1021420432103 has 2 divisors, whose sum is σ = 1021420432104. Its totient is φ = 1021420432102.

The previous prime is 1021420432027. The next prime is 1021420432121. The reversal of 1021420432103 is 3012340241201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1021420432103 - 2¹⁶ = 1021420366567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021420432133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510710216051 + 510710216052.

It is an arithmetic number, because the mean of its divisors is an integer number (510710216052).

Almost surely, 2^{1021420432103} is an apocalyptic number.

1021420432103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021420432103 is an equidigital number, since it uses as much as digits as its factorization.

1021420432103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1021420432103 its reverse (3012340241201), we get a palindrome (4033760673304).

The spelling of 1021420432103 in words is "one trillion, twenty-one billion, four hundred twenty million, four hundred thirty-two thousand, one hundred three".