102122120 has 16 divisors (see below), whose sum is σ = 229774860. Its totient is φ = 40848832.

The previous prime is 102122099. The next prime is 102122123. The reversal of 102122120 is 21221201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 83649316 + 18472804 = 9146^2 + 4298^2 .

It is not an unprimeable number, because it can be changed into a prime (102122123) 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, 1276487 + ... + 1276566.

Almost surely, 2^102122120 is an apocalyptic number.

102122120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102122120 is an abundant number, since it is smaller than the sum of its proper divisors (127652740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102122120 is a wasteful number, since it uses less digits than its factorization.

102122120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553064 (or 2553060 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 102122120 is about 10105.5489707388. The cubic root of 102122120 is about 467.4192640851.

Adding to 102122120 its reverse (21221201), we get a palindrome (123343321).

The spelling of 102122120 in words is "one hundred two million, one hundred twenty-two thousand, one hundred twenty".