1021242432101 has 4 divisors (see below), whose sum is σ = 1021244664192. Its totient is φ = 1021240200012.

The previous prime is 1021242432083. The next prime is 1021242432113. The reversal of 1021242432101 is 1012342421201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021242432101 is a prime.

It is a super-2 number, since 2×1021242432101² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021242432151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152405 + ... + 1437258.

It is an arithmetic number, because the mean of its divisors is an integer number (255311166048).

Almost surely, 2^{1021242432101} is an apocalyptic number.

It is an amenable number.

1021242432101 is a deficient number, since it is larger than the sum of its proper divisors (2232091).

1021242432101 is an equidigital number, since it uses as much as digits as its factorization.

1021242432101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232090.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1021242432101 its reverse (1012342421201), we get a palindrome (2033584853302).

The spelling of 1021242432101 in words is "one trillion, twenty-one billion, two hundred forty-two million, four hundred thirty-two thousand, one hundred one".