20040121033349 has 2 divisors, whose sum is σ = 20040121033350. Its totient is φ = 20040121033348.

The previous prime is 20040121033271. The next prime is 20040121033379. The reversal of 20040121033349 is 94333012104002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17512634736100 + 2527486297249 = 4184810^2 + 1589807^2 .

It is a cyclic number.

It is not a de Polignac number, because 20040121033349 - 2¹⁶ = 20040120967813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20040121033379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10020060516674 + 10020060516675.

It is an arithmetic number, because the mean of its divisors is an integer number (10020060516675).

Almost surely, 2^{20040121033349} is an apocalyptic number.

It is an amenable number.

20040121033349 is a deficient number, since it is larger than the sum of its proper divisors (1).

20040121033349 is an equidigital number, since it uses as much as digits as its factorization.

20040121033349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 32.

The spelling of 20040121033349 in words is "twenty trillion, forty billion, one hundred twenty-one million, thirty-three thousand, three hundred forty-nine".