13501121420442 has 32 divisors (see below), whose sum is σ = 28547533281600. Its totient is φ = 4244894062848.

The previous prime is 13501121420419. The next prime is 13501121420483. The reversal of 13501121420442 is 24402412110531.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258556623 + ... + 258608834.

It is an arithmetic number, because the mean of its divisors is an integer number (892110415050).

Almost surely, 2^{13501121420442} is an apocalyptic number.

13501121420442 is an abundant number, since it is smaller than the sum of its proper divisors (15046411861158).

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

13501121420442 is a wasteful number, since it uses less digits than its factorization.

13501121420442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517165710.

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 13501121420442 its reverse (24402412110531), we get a palindrome (37903533530973).

The spelling of 13501121420442 in words is "thirteen trillion, five hundred one billion, one hundred twenty-one million, four hundred twenty thousand, four hundred forty-two".