103101002021 has 4 divisors (see below), whose sum is σ = 104791182444. Its totient is φ = 101410821600.

The previous prime is 103101002009. The next prime is 103101002063. The reversal of 103101002021 is 120200101301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120200101301 = 7 ⋅17171443043.

It can be written as a sum of positive squares in 2 ways, for example, as 3162825121 + 99938176900 = 56239^2 + 316130^2 .

It is a cyclic number.

It is not a de Polignac number, because 103101002021 - 2³⁴ = 85921132837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103101001993 and 103101002011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103101007021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 845090120 + ... + 845090241.

It is an arithmetic number, because the mean of its divisors is an integer number (26197795611).

Almost surely, 2^103101002021 is an apocalyptic number.

It is an amenable number.

103101002021 is a deficient number, since it is larger than the sum of its proper divisors (1690180423).

103101002021 is an equidigital number, since it uses as much as digits as its factorization.

103101002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690180422.

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

Adding to 103101002021 its reverse (120200101301), we get a palindrome (223301103322).

The spelling of 103101002021 in words is "one hundred three billion, one hundred one million, two thousand, twenty-one".