1202231081 has 2 divisors, whose sum is σ = 1202231082. Its totient is φ = 1202231080.

The previous prime is 1202231077. The next prime is 1202231131. The reversal of 1202231081 is 1801322021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1136296681 + 65934400 = 33709^2 + 8120^2 .

It is an emirp because it is prime and its reverse (1801322021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1202231081 - 2² = 1202231077 is a prime.

It is a super-2 number, since 2×1202231081² = 2890719144244857122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1202231011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601115540 + 601115541.

It is an arithmetic number, because the mean of its divisors is an integer number (601115541).

Almost surely, 2^1202231081 is an apocalyptic number.

It is an amenable number.

1202231081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202231081 is an equidigital number, since it uses as much as digits as its factorization.

1202231081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 1202231081 is about 34673.2040775005. The cubic root of 1202231081 is about 1063.3167384938.

The spelling of 1202231081 in words is "one billion, two hundred two million, two hundred thirty-one thousand, eighty-one".