11211002121101 has 4 divisors (see below), whose sum is σ = 11322002142204. Its totient is φ = 11100002100000.

The previous prime is 11211002121097. The next prime is 11211002121169. The reversal of 11211002121101 is 10112120011211.

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 5573844088201 + 5637158032900 = 2360899^2 + 2374270^2 .

It is a cyclic number.

It is not a de Polignac number, because 11211002121101 - 2² = 11211002121097 is a prime.

It is a super-2 number, since 2×11211002121101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211002171101) 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, 55500010400 + ... + 55500010601.

It is an arithmetic number, because the mean of its divisors is an integer number (2830500535551).

Almost surely, 2^{11211002121101} is an apocalyptic number.

It is an amenable number.

11211002121101 is a deficient number, since it is larger than the sum of its proper divisors (111000021103).

11211002121101 is a wasteful number, since it uses less digits than its factorization.

11211002121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111000021102.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11211002121101 its reverse (10112120011211), we get a palindrome (21323122132312).

The spelling of 11211002121101 in words is "eleven trillion, two hundred eleven billion, two million, one hundred twenty-one thousand, one hundred one".