11020212130121 has 4 divisors (see below), whose sum is σ = 11228140660932. Its totient is φ = 10812283599312.

The previous prime is 11020212130091. The next prime is 11020212130129. The reversal of 11020212130121 is 12103121202011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3230866046521 + 7789346083600 = 1797461^2 + 2790940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11020212130121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11020212130121.

It is not an unprimeable number, because it can be changed into a prime (11020212130129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103964265326 + ... + 103964265431.

It is an arithmetic number, because the mean of its divisors is an integer number (2807035165233).

Almost surely, 2^{11020212130121} is an apocalyptic number.

It is an amenable number.

11020212130121 is a deficient number, since it is larger than the sum of its proper divisors (207928530811).

11020212130121 is an equidigital number, since it uses as much as digits as its factorization.

11020212130121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207928530810.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 11020212130121 its reverse (12103121202011), we get a palindrome (23123333332132).

The spelling of 11020212130121 in words is "eleven trillion, twenty billion, two hundred twelve million, one hundred thirty thousand, one hundred twenty-one".