1213235776105 has 16 divisors (see below), whose sum is σ = 1458505471104. Its totient is φ = 968841032320.

The previous prime is 1213235776061. The next prime is 1213235776121. The reversal of 1213235776105 is 5016775323121.

It is not a de Polignac number, because 1213235776105 - 2²¹ = 1213233678953 is a prime.

It is a super-2 number, since 2×1213235776105² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

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, 13188549 + ... + 13280221.

It is an arithmetic number, because the mean of its divisors is an integer number (91156591944).

Almost surely, 2^{1213235776105} is an apocalyptic number.

It is an amenable number.

1213235776105 is a deficient number, since it is larger than the sum of its proper divisors (245269694999).

1213235776105 is an equidigital number, since it uses as much as digits as its factorization.

1213235776105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96416.

The product of its (nonzero) digits is 264600, while the sum is 43.

The spelling of 1213235776105 in words is "one trillion, two hundred thirteen billion, two hundred thirty-five million, seven hundred seventy-six thousand, one hundred five".