102121412 has 24 divisors (see below), whose sum is σ = 188818560. Its totient is φ = 48248480.

The previous prime is 102121391. The next prime is 102121417. The reversal of 102121412 is 214121201.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (102121417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3914 + ... + 14817.

It is an arithmetic number, because the mean of its divisors is an integer number (7867440).

Almost surely, 2^102121412 is an apocalyptic number.

It is an amenable number.

102121412 is a deficient number, since it is larger than the sum of its proper divisors (86697148).

102121412 is a wasteful number, since it uses less digits than its factorization.

102121412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18811 (or 18809 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 102121412 is about 10105.5139404189. The cubic root of 102121412 is about 467.4181838960.

Adding to 102121412 its reverse (214121201), we get a palindrome (316242613).

The spelling of 102121412 in words is "one hundred two million, one hundred twenty-one thousand, four hundred twelve".