13131220021134 has 16 divisors (see below), whose sum is σ = 26264354239440. Its totient is φ = 4376754307520.

The previous prime is 13131220021103. The next prime is 13131220021259. The reversal of 13131220021134 is 43112002213131.

It is a congruent number.

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, 79669029 + ... + 79833680.

It is an arithmetic number, because the mean of its divisors is an integer number (1641522139965).

Almost surely, 2^{13131220021134} is an apocalyptic number.

13131220021134 is an abundant number, since it is smaller than the sum of its proper divisors (13133134218306).

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

13131220021134 is a wasteful number, since it uses less digits than its factorization.

13131220021134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159516435.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 13131220021134 its reverse (43112002213131), we get a palindrome (56243222234265).

The spelling of 13131220021134 in words is "thirteen trillion, one hundred thirty-one billion, two hundred twenty million, twenty-one thousand, one hundred thirty-four".