11211222010121 has 8 divisors (see below), whose sum is σ = 13054576572864. Its totient is φ = 9428305302000.

The previous prime is 11211222010069. The next prime is 11211222010133. The reversal of 11211222010121 is 12101022211211.

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 11211222010121 - 2⁶ = 11211222010057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11211222010121.

It is not an unprimeable number, because it can be changed into a prime (11211222010181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15109463255 + ... + 15109463996.

It is an arithmetic number, because the mean of its divisors is an integer number (1631822071608).

Almost surely, 2^{11211222010121} is an apocalyptic number.

It is an amenable number.

11211222010121 is a deficient number, since it is larger than the sum of its proper divisors (1843354562743).

11211222010121 is an equidigital number, since it uses as much as digits as its factorization.

11211222010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30218927311.

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

Adding to 11211222010121 its reverse (12101022211211), we get a palindrome (23312244221332).

The spelling of 11211222010121 in words is "eleven trillion, two hundred eleven billion, two hundred twenty-two million, ten thousand, one hundred twenty-one".