100102121003 has 4 divisors (see below), whose sum is σ = 105990481080. Its totient is φ = 94213760928.

The previous prime is 100102120999. The next prime is 100102121011. The reversal of 100102121003 is 300121201001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 300121201001 = 127 ⋅2363159063.

It is a cyclic number.

It is not a de Polignac number, because 100102121003 - 2² = 100102120999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100102121023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2944180013 + ... + 2944180046.

It is an arithmetic number, because the mean of its divisors is an integer number (26497620270).

Almost surely, 2^100102121003 is an apocalyptic number.

100102121003 is a deficient number, since it is larger than the sum of its proper divisors (5888360077).

100102121003 is an equidigital number, since it uses as much as digits as its factorization.

100102121003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5888360076.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 100102121003 its reverse (300121201001), we get a palindrome (400223322004).

The spelling of 100102121003 in words is "one hundred billion, one hundred two million, one hundred twenty-one thousand, three".