12111701554969 has 9 divisors (see below), whose sum is σ = 12267233365023. Its totient is φ = 11958117422472.

The previous prime is 12111701554961. The next prime is 12111701554973. The reversal of 12111701554969 is 96945510711121.

The square root of 12111701554969 is 3480187.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 8802169254025 + 3309532300944 = 2966845^2 + 1819212^2 .

It is not a de Polignac number, because 12111701554969 - 2³ = 12111701554961 is a prime.

It is a super-2 number, since 2×12111701554969² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12111701554961) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 274912747 + ... + 274956799.

It is an arithmetic number, because the mean of its divisors is an integer number (1363025929447).

Almost surely, 2^{12111701554969} is an apocalyptic number.

12111701554969 is the 3480187-th square number.

12111701554969 is the 1740094-th centered octagonal number.

It is an amenable number.

12111701554969 is a deficient number, since it is larger than the sum of its proper divisors (155531810054).

12111701554969 is an frugal number, since it uses more digits than its factorization.

12111701554969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88264 (or 44132 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 52.

The spelling of 12111701554969 in words is "twelve trillion, one hundred eleven billion, seven hundred one million, five hundred fifty-four thousand, nine hundred sixty-nine".