20131320020122 has 4 divisors (see below), whose sum is σ = 30196980030186. Its totient is φ = 10065660010060.

The previous prime is 20131320020111. The next prime is 20131320020143. The reversal of 20131320020122 is 22102002313102.

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

It can be written as a sum of positive squares in only one way, i.e., 19513855667601 + 617464352521 = 4417449^2 + 785789^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20131320020122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5032830005029 + ... + 5032830005032.

Almost surely, 2^{20131320020122} is an apocalyptic number.

20131320020122 is a deficient number, since it is larger than the sum of its proper divisors (10065660010064).

20131320020122 is a wasteful number, since it uses less digits than its factorization.

20131320020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10065660010063.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20131320020122 its reverse (22102002313102), we get a palindrome (42233322333224).

The spelling of 20131320020122 in words is "twenty trillion, one hundred thirty-one billion, three hundred twenty million, twenty thousand, one hundred twenty-two".