11211001002121 has 8 divisors (see below), whose sum is σ = 11235048717024. Its totient is φ = 11186958226080.

The previous prime is 11211001002109. The next prime is 11211001002139. The reversal of 11211001002121 is 12120010011211.

It is a happy number.

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 11211001002121 - 2²¹ = 11210998904969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11211001002181) 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, 3328125 + ... + 5787781.

It is an arithmetic number, because the mean of its divisors is an integer number (1404381089628).

Almost surely, 2^{11211001002121} is an apocalyptic number.

It is an amenable number.

11211001002121 is a deficient number, since it is larger than the sum of its proper divisors (24047714903).

11211001002121 is an equidigital number, since it uses as much as digits as its factorization.

11211001002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2469431.

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

Adding to 11211001002121 its reverse (12120010011211), we get a palindrome (23331011013332).

The spelling of 11211001002121 in words is "eleven trillion, two hundred eleven billion, one million, two thousand, one hundred twenty-one".