102213123 has 32 divisors (see below), whose sum is σ = 144399360. Its totient is φ = 64247040.

The previous prime is 102213113. The next prime is 102213151. The reversal of 102213123 is 321312201.

It is not a de Polignac number, because 102213123 - 2¹⁶ = 102147587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102213113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 650961 + ... + 651117.

It is an arithmetic number, because the mean of its divisors is an integer number (4512480).

Almost surely, 2^102213123 is an apocalyptic number.

102213123 is a deficient number, since it is larger than the sum of its proper divisors (42186237).

102213123 is a wasteful number, since it uses less digits than its factorization.

102213123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347.

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

The square root of 102213123 is about 10110.0505933452. The cubic root of 102213123 is about 467.5580649851.

Adding to 102213123 its reverse (321312201), we get a palindrome (423525324).

The spelling of 102213123 in words is "one hundred two million, two hundred thirteen thousand, one hundred twenty-three".