1421243143122 has 16 divisors (see below), whose sum is σ = 3100894130592. Its totient is φ = 430679740320.

The previous prime is 1421243143109. The next prime is 1421243143139. The reversal of 1421243143122 is 2213413421241.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1421243143122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10766993443 + ... + 10766993574.

It is an arithmetic number, because the mean of its divisors is an integer number (193805883162).

Almost surely, 2^{1421243143122} is an apocalyptic number.

1421243143122 is an abundant number, since it is smaller than the sum of its proper divisors (1679650987470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1421243143122 is a wasteful number, since it uses less digits than its factorization.

1421243143122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21533987033.

The product of its digits is 9216, while the sum is 30.

Adding to 1421243143122 its reverse (2213413421241), we get a palindrome (3634656564363).

The spelling of 1421243143122 in words is "one trillion, four hundred twenty-one billion, two hundred forty-three million, one hundred forty-three thousand, one hundred twenty-two".