2112021031 has 2 divisors, whose sum is σ = 2112021032. Its totient is φ = 2112021030.

The previous prime is 2112021001. The next prime is 2112021073. The reversal of 2112021031 is 1301202112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2112021031 - 2¹³ = 2112012839 is a prime.

It is a super-2 number, since 2×2112021031² = 8921265670772605922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112021001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056010515 + 1056010516.

It is an arithmetic number, because the mean of its divisors is an integer number (1056010516).

Almost surely, 2^2112021031 is an apocalyptic number.

2112021031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112021031 is an equidigital number, since it uses as much as digits as its factorization.

2112021031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2112021031 is about 45956.7299859335. The cubic root of 2112021031 is about 1283.0179906745.

Adding to 2112021031 its reverse (1301202112), we get a palindrome (3413223143).

The spelling of 2112021031 in words is "two billion, one hundred twelve million, twenty-one thousand, thirty-one".