101030121242 has 4 divisors (see below), whose sum is σ = 151545181866. Its totient is φ = 50515060620.

The previous prime is 101030121217. The next prime is 101030121277. The reversal of 101030121242 is 242121030101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242121030101 = 71563 ⋅3383327.

It can be written as a sum of positive squares in only one way, i.e., 101029258201 + 863041 = 317851^2 + 929^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 101030121242.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25257530309 + ... + 25257530312.

Almost surely, 2^101030121242 is an apocalyptic number.

101030121242 is a deficient number, since it is larger than the sum of its proper divisors (50515060624).

101030121242 is an equidigital number, since it uses as much as digits as its factorization.

101030121242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50515060623.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 101030121242 its reverse (242121030101), we get a palindrome (343151151343).

The spelling of 101030121242 in words is "one hundred one billion, thirty million, one hundred twenty-one thousand, two hundred forty-two".