2222121000031 has 4 divisors (see below), whose sum is σ = 2222129563632. Its totient is φ = 2222112436432.

The previous prime is 2222121000019. The next prime is 2222121000049. The reversal of 2222121000031 is 1300001212222.

It is a happy number.

2222121000031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2222121000031 - 2⁵ = 2222120999999 is a prime.

It is a super-2 number, since 2×2222121000031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2222120999969 and 2222121000014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222121000061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3880006 + ... + 4415731.

It is an arithmetic number, because the mean of its divisors is an integer number (555532390908).

Almost surely, 2^{2222121000031} is an apocalyptic number.

2222121000031 is a deficient number, since it is larger than the sum of its proper divisors (8563601).

2222121000031 is an equidigital number, since it uses as much as digits as its factorization.

2222121000031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8563600.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 2222121000031 its reverse (1300001212222), we get a palindrome (3522122212253).

The spelling of 2222121000031 in words is "two trillion, two hundred twenty-two billion, one hundred twenty-one million, thirty-one", and thus it is an aban number.