1351061245421 has 8 divisors (see below), whose sum is σ = 1364472904704. Its totient is φ = 1337692920480.

The previous prime is 1351061245367. The next prime is 1351061245477. The reversal of 1351061245421 is 1245421601531.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1351061245421 - 2⁶ = 1351061245357 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 (1351061245481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10770920 + ... + 10895633.

It is an arithmetic number, because the mean of its divisors is an integer number (170559113088).

Almost surely, 2^{1351061245421} is an apocalyptic number.

It is an amenable number.

1351061245421 is a deficient number, since it is larger than the sum of its proper divisors (13411659283).

1351061245421 is a wasteful number, since it uses less digits than its factorization.

1351061245421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21667171.

The product of its (nonzero) digits is 28800, while the sum is 35.

Adding to 1351061245421 its reverse (1245421601531), we get a palindrome (2596482846952).

The spelling of 1351061245421 in words is "one trillion, three hundred fifty-one billion, sixty-one million, two hundred forty-five thousand, four hundred twenty-one".