1420121221453 has 16 divisors (see below), whose sum is σ = 1565224771392. Its totient is φ = 1277695440000.

The previous prime is 1420121221427. The next prime is 1420121221457. The reversal of 1420121221453 is 3541221210241.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1420121221453 - 2²¹ = 1420119124301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420121221457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2364625 + ... + 2903737.

It is an arithmetic number, because the mean of its divisors is an integer number (97826548212).

Almost surely, 2^{1420121221453} is an apocalyptic number.

It is an amenable number.

1420121221453 is a deficient number, since it is larger than the sum of its proper divisors (145103549939).

1420121221453 is a wasteful number, since it uses less digits than its factorization.

1420121221453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541596.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 1420121221453 its reverse (3541221210241), we get a palindrome (4961342431694).

The spelling of 1420121221453 in words is "one trillion, four hundred twenty billion, one hundred twenty-one million, two hundred twenty-one thousand, four hundred fifty-three".