11000021210121 has 16 divisors (see below), whose sum is σ = 15007899303936. Its totient is φ = 7162747986576.

The previous prime is 11000021210051. The next prime is 11000021210131. The reversal of 11000021210121 is 12101212000011.

It is not a de Polignac number, because 11000021210121 - 2¹⁸ = 11000020947977 is a prime.

It is a super-2 number, since 2×11000021210121² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11000021210097 and 11000021210106.

It is not an unprimeable number, because it can be changed into a prime (11000021210131) 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, 21593476 + ... + 22097018.

It is an arithmetic number, because the mean of its divisors is an integer number (937993706496).

Almost surely, 2^{11000021210121} is an apocalyptic number.

It is an amenable number.

11000021210121 is a deficient number, since it is larger than the sum of its proper divisors (4007878093815).

11000021210121 is a wasteful number, since it uses less digits than its factorization.

11000021210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672932.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11000021210121 its reverse (12101212000011), we get a palindrome (23101233210132).

The spelling of 11000021210121 in words is "eleven trillion, twenty-one million, two hundred ten thousand, one hundred twenty-one".