11211012002121 has 16 divisors (see below), whose sum is σ = 15066356997120. Its totient is φ = 7414869580560.

The previous prime is 11211012002119. The next prime is 11211012002159. The reversal of 11211012002121 is 12120021011211.

It is a happy number.

It is not a de Polignac number, because 11211012002121 - 2¹ = 11211012002119 is a prime.

It is a super-2 number, since 2×11211012002121² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11211012002121.

It is not an unprimeable number, because it can be changed into a prime (11211012002101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2609005 + ... + 5406378.

It is an arithmetic number, because the mean of its divisors is an integer number (941647312320).

Almost surely, 2^{11211012002121} is an apocalyptic number.

It is an amenable number.

11211012002121 is a deficient number, since it is larger than the sum of its proper divisors (3855344994999).

11211012002121 is a wasteful number, since it uses less digits than its factorization.

11211012002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8019076.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11211012002121 its reverse (12120021011211), we get a palindrome (23331033013332).

The spelling of 11211012002121 in words is "eleven trillion, two hundred eleven billion, twelve million, two thousand, one hundred twenty-one".