1421114235551 has 4 divisors (see below), whose sum is σ = 1421202755952. Its totient is φ = 1421025715152.

The previous prime is 1421114235533. The next prime is 1421114235571. The reversal of 1421114235551 is 1555324111241.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1421114235551 - 2¹⁸ = 1421113973407 is a prime.

It is a super-2 number, since 2×1421114235551² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421114235521) 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 3 ways as a sum of consecutive naturals, for example, 44236115 + ... + 44268228.

It is an arithmetic number, because the mean of its divisors is an integer number (355300688988).

Almost surely, 2^{1421114235551} is an apocalyptic number.

1421114235551 is a deficient number, since it is larger than the sum of its proper divisors (88520401).

1421114235551 is an equidigital number, since it uses as much as digits as its factorization.

1421114235551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88520400.

The product of its digits is 24000, while the sum is 35.

Adding to 1421114235551 its reverse (1555324111241), we get a palindrome (2976438346792).

The spelling of 1421114235551 in words is "one trillion, four hundred twenty-one billion, one hundred fourteen million, two hundred thirty-five thousand, five hundred fifty-one".