11221021210121 has 8 divisors (see below), whose sum is σ = 11229798206088. Its totient is φ = 11212247520000.

The previous prime is 11221021210037. The next prime is 11221021210127. The reversal of 11221021210121 is 12101212012211.

11221021210121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2573422347721 + 8647598862400 = 1604189^2 + 2940680^2 .

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 11221021210121 - 2⁴² = 6822974699017 is a prime.

It is a super-2 number, since 2×11221021210121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11221021210121.

It is not an unprimeable number, because it can be changed into a prime (11221021210127) 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, 5986721 + ... + 7634321.

It is an arithmetic number, because the mean of its divisors is an integer number (1403724775761).

Almost surely, 2^{11221021210121} is an apocalyptic number.

It is an amenable number.

11221021210121 is a deficient number, since it is larger than the sum of its proper divisors (8776995967).

11221021210121 is a wasteful number, since it uses less digits than its factorization.

11221021210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652923.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11221021210121 its reverse (12101212012211), we get a palindrome (23322233222332).

The spelling of 11221021210121 in words is "eleven trillion, two hundred twenty-one billion, twenty-one million, two hundred ten thousand, one hundred twenty-one".