103121210020005 has 32 divisors (see below), whose sum is σ = 191297317144320. Its totient is φ = 52606762211520.

The previous prime is 103121210019991. The next prime is 103121210020021. The reversal of 103121210020005 is 500020012121301.

It is not a de Polignac number, because 103121210020005 - 2⁹ = 103121210019493 is a prime.

It is a super-2 number, since 2×103121210020005² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 103121210020005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16605666786 + ... + 16605672995.

It is an arithmetic number, because the mean of its divisors is an integer number (5978041160760).

Almost surely, 2^{103121210020005} is an apocalyptic number.

103121210020005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

103121210020005 is a deficient number, since it is larger than the sum of its proper divisors (88176107124315).

103121210020005 is a wasteful number, since it uses less digits than its factorization.

103121210020005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33211339818 (or 33211339812 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 103121210020005 its reverse (500020012121301), we get a palindrome (603141222141306).

The spelling of 103121210020005 in words is "one hundred three trillion, one hundred twenty-one billion, two hundred ten million, twenty thousand, five".