11021121020121 has 16 divisors (see below), whose sum is σ = 15581146900800. Its totient is φ = 6909899920128.

The previous prime is 11021121020057. The next prime is 11021121020149. The reversal of 11021121020121 is 12102012112011.

It is a happy number.

It is not a de Polignac number, because 11021121020121 - 2⁶ = 11021121020057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11021121020121.

It is not an unprimeable number, because it can be changed into a prime (11021121020621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 705660076 + ... + 705675693.

It is an arithmetic number, because the mean of its divisors is an integer number (973821681300).

Almost surely, 2^{11021121020121} is an apocalyptic number.

It is an amenable number.

11021121020121 is a deficient number, since it is larger than the sum of its proper divisors (4560025880679).

11021121020121 is a wasteful number, since it uses less digits than its factorization.

11021121020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411335928.

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

Adding to 11021121020121 its reverse (12102012112011), we get a palindrome (23123133132132).

The spelling of 11021121020121 in words is "eleven trillion, twenty-one billion, one hundred twenty-one million, twenty thousand, one hundred twenty-one".