1220202031 has 2 divisors, whose sum is σ = 1220202032. Its totient is φ = 1220202030.

The previous prime is 1220202001. The next prime is 1220202073. The reversal of 1220202031 is 1302020221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220202031 - 2¹¹ = 1220199983 is a prime.

It is a super-2 number, since 2×1220202031² = 2977785992913049922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220202001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610101015 + 610101016.

It is an arithmetic number, because the mean of its divisors is an integer number (610101016).

Almost surely, 2^1220202031 is an apocalyptic number.

1220202031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220202031 is an equidigital number, since it uses as much as digits as its factorization.

1220202031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1220202031 is about 34931.3903387770. The cubic root of 1220202031 is about 1068.5887094425.

Adding to 1220202031 its reverse (1302020221), we get a palindrome (2522222252).

The spelling of 1220202031 in words is "one billion, two hundred twenty million, two hundred two thousand, thirty-one".