11212152205501 has 8 divisors (see below), whose sum is σ = 12074664099960. Its totient is φ = 10349645832192.

The previous prime is 11212152205469. The next prime is 11212152205531. The reversal of 11212152205501 is 10550225121211.

It can be written as a sum of positive squares in 4 ways, for example, as 1069774421401 + 10142377784100 = 1034299^2 + 3184710^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11212152205501 - 2⁵ = 11212152205469 is a prime.

It is a super-2 number, since 2×11212152205501² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11212152205501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212152205531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3468285 + ... + 5869693.

It is an arithmetic number, because the mean of its divisors is an integer number (1509333012495).

Almost surely, 2^{11212152205501} is an apocalyptic number.

It is an amenable number.

11212152205501 is a deficient number, since it is larger than the sum of its proper divisors (862511894459).

11212152205501 is a wasteful number, since it uses less digits than its factorization.

11212152205501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2760575.

The product of its (nonzero) digits is 2000, while the sum is 28.

Adding to 11212152205501 its reverse (10550225121211), we get a palindrome (21762377326712).

The spelling of 11212152205501 in words is "eleven trillion, two hundred twelve billion, one hundred fifty-two million, two hundred five thousand, five hundred one".