1051521225142 has 4 divisors (see below), whose sum is σ = 1577281837716. Its totient is φ = 525760612570.

The previous prime is 1051521225133. The next prime is 1051521225169. The reversal of 1051521225142 is 2415221251501.

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

It is a super-2 number, since 2×1051521225142² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262880306284 + ... + 262880306287.

It is an arithmetic number, because the mean of its divisors is an integer number (394320459429).

Almost surely, 2^{1051521225142} is an apocalyptic number.

1051521225142 is a deficient number, since it is larger than the sum of its proper divisors (525760612574).

1051521225142 is an equidigital number, since it uses as much as digits as its factorization.

1051521225142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525760612573.

The product of its (nonzero) digits is 8000, while the sum is 31.

Adding to 1051521225142 its reverse (2415221251501), we get a palindrome (3466742476643).

The spelling of 1051521225142 in words is "one trillion, fifty-one billion, five hundred twenty-one million, two hundred twenty-five thousand, one hundred forty-two".