1141212421665 has 12 divisors (see below), whose sum is σ = 1978101530964. Its totient is φ = 608646624864.

The previous prime is 1141212421663. The next prime is 1141212421691. The reversal of 1141212421665 is 5661242121411.

1141212421665 is a `hidden beast` number, since 1 + 1 + 412 + 1 + 24 + 216 + 6 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 443508049296 + 697704372369 = 665964^2 + 835287^2 .

It is not a de Polignac number, because 1141212421665 - 2¹ = 1141212421663 is a prime.

It is a super-3 number, since 3×1141212421665³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1141212421663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12680137974 + ... + 12680138063.

It is an arithmetic number, because the mean of its divisors is an integer number (164841794247).

Almost surely, 2^{1141212421665} is an apocalyptic number.

1141212421665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1141212421665 is a deficient number, since it is larger than the sum of its proper divisors (836889109299).

1141212421665 is a wasteful number, since it uses less digits than its factorization.

1141212421665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25360276048 (or 25360276045 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The spelling of 1141212421665 in words is "one trillion, one hundred forty-one billion, two hundred twelve million, four hundred twenty-one thousand, six hundred sixty-five".