11221031112021 has 6 divisors (see below), whose sum is σ = 16208156050710. Its totient is φ = 7480687408008.

The previous prime is 11221031111981. The next prime is 11221031112043. The reversal of 11221031112021 is 12021113012211.

It is a happy number.

11221031112021 is a `hidden beast` number, since 1 + 1 + 2 + 210 + 311 + 120 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9951589488996 + 1269441623025 = 3154614^2 + 1126695^2 .

It is not a de Polignac number, because 11221031112021 - 2¹⁷ = 11221030980949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11221031111985 and 11221031112003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221031112061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 623390617326 + ... + 623390617343.

It is an arithmetic number, because the mean of its divisors is an integer number (2701359341785).

Almost surely, 2^{11221031112021} is an apocalyptic number.

It is an amenable number.

11221031112021 is a deficient number, since it is larger than the sum of its proper divisors (4987124938689).

11221031112021 is a wasteful number, since it uses less digits than its factorization.

11221031112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246781234675 (or 1246781234672 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 11221031112021 its reverse (12021113012211), we get a palindrome (23242144124232).

The spelling of 11221031112021 in words is "eleven trillion, two hundred twenty-one billion, thirty-one million, one hundred twelve thousand, twenty-one".