103212210155 has 4 divisors (see below), whose sum is σ = 123854652192. Its totient is φ = 82569768120.

The previous prime is 103212210149. The next prime is 103212210161. The reversal of 103212210155 is 551012212301.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (103212210149) and next prime (103212210161).

It is not a de Polignac number, because 103212210155 - 2¹⁸ = 103211948011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103212210155.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10321221011 + ... + 10321221020.

It is an arithmetic number, because the mean of its divisors is an integer number (30963663048).

Almost surely, 2^103212210155 is an apocalyptic number.

103212210155 is a deficient number, since it is larger than the sum of its proper divisors (20642442037).

103212210155 is an equidigital number, since it uses as much as digits as its factorization.

103212210155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20642442036.

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 103212210155 its reverse (551012212301), we get a palindrome (654224422456).

The spelling of 103212210155 in words is "one hundred three billion, two hundred twelve million, two hundred ten thousand, one hundred fifty-five".