11012212220121 has 24 divisors (see below), whose sum is σ = 18244517804864. Its totient is φ = 6269975385120.

The previous prime is 11012212220069. The next prime is 11012212220129. The reversal of 11012212220121 is 12102221221011.

11012212220121 is a `hidden beast` number, since 1 + 101 + 221 + 2 + 220 + 121 = 666.

It is not a de Polignac number, because 11012212220121 - 2⁷ = 11012212219993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11012212220094 and 11012212220103.

It is not an unprimeable number, because it can be changed into a prime (11012212220129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 315500635 + ... + 315535536.

Almost surely, 2^{11012212220121} is an apocalyptic number.

It is an amenable number.

11012212220121 is a deficient number, since it is larger than the sum of its proper divisors (7232305584743).

11012212220121 is a wasteful number, since it uses less digits than its factorization.

11012212220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631036461 (or 631036458 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11012212220121 its reverse (12102221221011), we get a palindrome (23114433441132).

The spelling of 11012212220121 in words is "eleven trillion, twelve billion, two hundred twelve million, two hundred twenty thousand, one hundred twenty-one".