1421020223137 has 2 divisors, whose sum is σ = 1421020223138. Its totient is φ = 1421020223136.

The previous prime is 1421020223123. The next prime is 1421020223167. The reversal of 1421020223137 is 7313220201241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1031689149841 + 389331073296 = 1015721^2 + 623964^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421020223137 - 2⁷ = 1421020223009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1421020223167) 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 as a sum of consecutive naturals, namely, 710510111568 + 710510111569.

It is an arithmetic number, because the mean of its divisors is an integer number (710510111569).

Almost surely, 2^{1421020223137} is an apocalyptic number.

It is an amenable number.

1421020223137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421020223137 is an equidigital number, since it uses as much as digits as its factorization.

1421020223137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 1421020223137 its reverse (7313220201241), we get a palindrome (8734240424378).

The spelling of 1421020223137 in words is "one trillion, four hundred twenty-one billion, twenty million, two hundred twenty-three thousand, one hundred thirty-seven".