103212123 has 16 divisors (see below), whose sum is σ = 165553920. Its totient is φ = 55874016.

The previous prime is 103212103. The next prime is 103212163. The reversal of 103212123 is 321212301.

It is not a de Polignac number, because 103212123 - 2⁶ = 103212059 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (103212103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128940 + ... + 129737.

It is an arithmetic number, because the mean of its divisors is an integer number (10347120).

Almost surely, 2^103212123 is an apocalyptic number.

103212123 is a deficient number, since it is larger than the sum of its proper divisors (62341797).

103212123 is a wasteful number, since it uses less digits than its factorization.

103212123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258706.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 103212123 is about 10159.3367401617. The cubic root of 103212123 is about 469.0763859502.

Adding to 103212123 its reverse (321212301), we get a palindrome (424424424).

It can be divided in two parts, 103 and 212123, that added together give a triangular number (212226 = T₆₅₁).

The spelling of 103212123 in words is "one hundred three million, two hundred twelve thousand, one hundred twenty-three".