11211020001121 has 2 divisors, whose sum is σ = 11211020001122. Its totient is φ = 11211020001120.

The previous prime is 11211020001119. The next prime is 11211020001161. The reversal of 11211020001121 is 12110002011211.

It is a happy number.

11211020001121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9496258560000 + 1714761441121 = 3081600^2 + 1309489^2 .

It is a cyclic number.

It is not a de Polignac number, because 11211020001121 - 2¹ = 11211020001119 is a prime.

Together with 11211020001119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11211020001161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605510000560 + 5605510000561.

It is an arithmetic number, because the mean of its divisors is an integer number (5605510000561).

Almost surely, 2^{11211020001121} is an apocalyptic number.

It is an amenable number.

11211020001121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211020001121 is an equidigital number, since it uses as much as digits as its factorization.

11211020001121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11211020001121 its reverse (12110002011211), we get a palindrome (23321022012332).

The spelling of 11211020001121 in words is "eleven trillion, two hundred eleven billion, twenty million, one thousand, one hundred twenty-one".