103501251021 has 12 divisors (see below), whose sum is σ = 160532552832. Its totient is φ = 59143571928.

The previous prime is 103501251013. The next prime is 103501251041. The reversal of 103501251021 is 120152105301.

It is not a de Polignac number, because 103501251021 - 2³ = 103501251013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103501251041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 352044925 + ... + 352045218.

It is an arithmetic number, because the mean of its divisors is an integer number (13377712736).

Almost surely, 2^103501251021 is an apocalyptic number.

It is an amenable number.

103501251021 is a deficient number, since it is larger than the sum of its proper divisors (57031301811).

103501251021 is an equidigital number, since it uses as much as digits as its factorization.

103501251021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704090160 (or 704090153 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 21.

Adding to 103501251021 its reverse (120152105301), we get a palindrome (223653356322).

The spelling of 103501251021 in words is "one hundred three billion, five hundred one million, two hundred fifty-one thousand, twenty-one".