103012212110021 has 4 divisors (see below), whose sum is σ = 103403893525152. Its totient is φ = 102620530694892.

The previous prime is 103012212110011. The next prime is 103012212110089. The reversal of 103012212110021 is 120011212210301.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103012212110021 is a prime.

It is a super-2 number, since 2×103012212110021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103012212110011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195840707171 + ... + 195840707696.

It is an arithmetic number, because the mean of its divisors is an integer number (25850973381288).

Almost surely, 2^{103012212110021} is an apocalyptic number.

It is an amenable number.

103012212110021 is a deficient number, since it is larger than the sum of its proper divisors (391681415131).

103012212110021 is an equidigital number, since it uses as much as digits as its factorization.

103012212110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391681415130.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 103012212110021 its reverse (120011212210301), we get a palindrome (223023424320322).

The spelling of 103012212110021 in words is "one hundred three trillion, twelve billion, two hundred twelve million, one hundred ten thousand, twenty-one".