1220131043 has 2 divisors, whose sum is σ = 1220131044. Its totient is φ = 1220131042.

The previous prime is 1220131039. The next prime is 1220131069. The reversal of 1220131043 is 3401310221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220131043 - 2² = 1220131039 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220131093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610065521 + 610065522.

It is an arithmetic number, because the mean of its divisors is an integer number (610065522).

Almost surely, 2^1220131043 is an apocalyptic number.

1220131043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220131043 is an equidigital number, since it uses as much as digits as its factorization.

1220131043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1220131043 is about 34930.3742178637. The cubic root of 1220131043 is about 1068.5679865227.

Adding to 1220131043 its reverse (3401310221), we get a palindrome (4621441264).

The spelling of 1220131043 in words is "one billion, two hundred twenty million, one hundred thirty-one thousand, forty-three".