11001012202121 has 8 divisors (see below), whose sum is σ = 11383425870600. Its totient is φ = 10618803095040.

The previous prime is 11001012202049. The next prime is 11001012202171. The reversal of 11001012202121 is 12120221010011.

It can be written as a sum of positive squares in 4 ways, for example, as 1210440040000 + 9790572162121 = 1100200^2 + 3128989^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11001012202121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11001012202096 and 11001012202105.

It is not an unprimeable number, because it can be changed into a prime (11001012202171) 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, 51030920 + ... + 51246041.

It is an arithmetic number, because the mean of its divisors is an integer number (1422928233825).

Almost surely, 2^{11001012202121} is an apocalyptic number.

It is an amenable number.

11001012202121 is a deficient number, since it is larger than the sum of its proper divisors (382413668479).

11001012202121 is a wasteful number, since it uses less digits than its factorization.

11001012202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102280699.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11001012202121 its reverse (12120221010011), we get a palindrome (23121233212132).

The spelling of 11001012202121 in words is "eleven trillion, one billion, twelve million, two hundred two thousand, one hundred twenty-one".