2105234121154 has 16 divisors (see below), whose sum is σ = 3187103990400. Its totient is φ = 1042867831824.

The previous prime is 2105234121149. The next prime is 2105234121173. The reversal of 2105234121154 is 4511214325012.

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, 2078727 + ... + 2920885.

It is an arithmetic number, because the mean of its divisors is an integer number (199193999400).

Almost surely, 2^{2105234121154} is an apocalyptic number.

2105234121154 is a deficient number, since it is larger than the sum of its proper divisors (1081869869246).

2105234121154 is a wasteful number, since it uses less digits than its factorization.

2105234121154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853737.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 2105234121154 its reverse (4511214325012), we get a palindrome (6616448446166).

The spelling of 2105234121154 in words is "two trillion, one hundred five billion, two hundred thirty-four million, one hundred twenty-one thousand, one hundred fifty-four".