1420423122121 has 4 divisors (see below), whose sum is σ = 1423896039700. Its totient is φ = 1416950204544.

The previous prime is 1420423122101. The next prime is 1420423122137. The reversal of 1420423122121 is 1212213240241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 591267185721 + 829155936400 = 768939^2 + 910580^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420423122121 - 2²⁹ = 1419886251209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420423122101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1736458176 + ... + 1736458993.

It is an arithmetic number, because the mean of its divisors is an integer number (355974009925).

Almost surely, 2^{1420423122121} is an apocalyptic number.

It is an amenable number.

1420423122121 is a deficient number, since it is larger than the sum of its proper divisors (3472917579).

1420423122121 is an equidigital number, since it uses as much as digits as its factorization.

1420423122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3472917578.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 1420423122121 its reverse (1212213240241), we get a palindrome (2632636362362).

The spelling of 1420423122121 in words is "one trillion, four hundred twenty billion, four hundred twenty-three million, one hundred twenty-two thousand, one hundred twenty-one".