1421020223123 has 2 divisors, whose sum is σ = 1421020223124. Its totient is φ = 1421020223122.

The previous prime is 1421020223099. The next prime is 1421020223137. The reversal of 1421020223123 is 3213220201241.

It is a strong prime.

It is an emirp because it is prime and its reverse (3213220201241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1421020223123 is a prime.

It is not a weakly prime, because it can be changed into another prime (1421020223173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710510111561 + 710510111562.

It is an arithmetic number, because the mean of its divisors is an integer number (710510111562).

Almost surely, 2^{1421020223123} is an apocalyptic number.

1421020223123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421020223123 is an equidigital number, since it uses as much as digits as its factorization.

1421020223123 is an evil number, because the sum of its binary digits is even.

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

Adding to 1421020223123 its reverse (3213220201241), we get a palindrome (4634240424364).

The spelling of 1421020223123 in words is "one trillion, four hundred twenty-one billion, twenty million, two hundred twenty-three thousand, one hundred twenty-three".