10101100642 has 4 divisors (see below), whose sum is σ = 15151650966. Its totient is φ = 5050550320.

The previous prime is 10101100571. The next prime is 10101100643. The reversal of 10101100642 is 24600110101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8406872721 + 1694227921 = 91689^2 + 41161^2 .

It is not an unprimeable number, because it can be changed into a prime (10101100643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2525275159 + ... + 2525275162.

Almost surely, 2^10101100642 is an apocalyptic number.

10101100642 is a deficient number, since it is larger than the sum of its proper divisors (5050550324).

10101100642 is an equidigital number, since it uses as much as digits as its factorization.

10101100642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5050550323.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 10101100642 its reverse (24600110101), we get a palindrome (34701210743).

The spelling of 10101100642 in words is "ten billion, one hundred one million, one hundred thousand, six hundred forty-two".