1420011121 has 2 divisors, whose sum is σ = 1420011122. Its totient is φ = 1420011120.

The previous prime is 1420011107. The next prime is 1420011127. The reversal of 1420011121 is 1211100241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1056575025 + 363436096 = 32505^2 + 19064^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420011121 - 2¹⁵ = 1419978353 is a prime.

It is not a weakly prime, because it can be changed into another prime (1420011127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710005560 + 710005561.

It is an arithmetic number, because the mean of its divisors is an integer number (710005561).

Almost surely, 2^1420011121 is an apocalyptic number.

It is an amenable number.

1420011121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420011121 is an equidigital number, since it uses as much as digits as its factorization.

1420011121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1420011121 is about 37683.0349228934. The cubic root of 1420011121 is about 1123.9937988560.

Adding to 1420011121 its reverse (1211100241), we get a palindrome (2631111362).

The spelling of 1420011121 in words is "one billion, four hundred twenty million, eleven thousand, one hundred twenty-one".