1243002101 has 12 divisors (see below), whose sum is σ = 1368700704. Its totient is φ = 1119517200.

The previous prime is 1243002077. The next prime is 1243002113. The reversal of 1243002101 is 1012003421.

It is not a de Polignac number, because 1243002101 - 2²⁶ = 1175893237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243002121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125936 + ... + 135446.

It is an arithmetic number, because the mean of its divisors is an integer number (114058392).

Almost surely, 2^1243002101 is an apocalyptic number.

1243002101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1243002101 is a deficient number, since it is larger than the sum of its proper divisors (125698603).

1243002101 is an equidigital number, since it uses as much as digits as its factorization.

1243002101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9740 (or 9631 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1243002101 is about 35256.2349237692. The cubic root of 1243002101 is about 1075.2033798723.

Adding to 1243002101 its reverse (1012003421), we get a palindrome (2255005522).

The spelling of 1243002101 in words is "one billion, two hundred forty-three million, two thousand, one hundred one".