1122211220121 has 32 divisors (see below), whose sum is σ = 1764721468800. Its totient is φ = 702376473600.

The previous prime is 1122211220101. The next prime is 1122211220159. The reversal of 1122211220121 is 1210221122211.

1122211220121 is a `hidden beast` number, since 112 + 2 + 211 + 220 + 121 = 666.

It is not a de Polignac number, because 1122211220121 - 2⁶ = 1122211220057 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1122211220094 and 1122211220103.

It is not an unprimeable number, because it can be changed into a prime (1122211220101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2864451 + ... + 3232568.

It is an arithmetic number, because the mean of its divisors is an integer number (55147545900).

Almost surely, 2^{1122211220121} is an apocalyptic number.

It is an amenable number.

1122211220121 is a deficient number, since it is larger than the sum of its proper divisors (642510248679).

1122211220121 is a wasteful number, since it uses less digits than its factorization.

1122211220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6097446 (or 6097440 counting only the distinct ones).

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

Adding to 1122211220121 its reverse (1210221122211), we get a palindrome (2332432342332).

The spelling of 1122211220121 in words is "one trillion, one hundred twenty-two billion, two hundred eleven million, two hundred twenty thousand, one hundred twenty-one".