11222221010121 has 48 divisors (see below), whose sum is σ = 18620377251840. Its totient is φ = 6441245768160.

The previous prime is 11222221010113. The next prime is 11222221010131. The reversal of 11222221010121 is 12101012222211.

11222221010121 is a `hidden beast` number, since 112 + 222 + 210 + 1 + 0 + 121 = 666.

11222221010121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11222221010121 - 2³ = 11222221010113 is a prime.

It is a super-3 number, since 3×11222221010121³ (a number of 40 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11222221010094 and 11222221010103.

It is not an unprimeable number, because it can be changed into a prime (11222221010111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4699480 + ... + 6673046.

It is an arithmetic number, because the mean of its divisors is an integer number (387924526080).

Almost surely, 2^{11222221010121} is an apocalyptic number.

11222221010121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11222221010121 is a deficient number, since it is larger than the sum of its proper divisors (7398156241719).

11222221010121 is a wasteful number, since it uses less digits than its factorization.

11222221010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1976626 (or 1976623 counting only the distinct ones).

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

Adding to 11222221010121 its reverse (12101012222211), we get a palindrome (23323233232332).

The spelling of 11222221010121 in words is "eleven trillion, two hundred twenty-two billion, two hundred twenty-one million, ten thousand, one hundred twenty-one".