102121224 has 32 divisors (see below), whose sum is σ = 260737920. Its totient is φ = 33315776.

The previous prime is 102121213. The next prime is 102121231. The reversal of 102121224 is 422121201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44139 + ... + 46394.

It is an arithmetic number, because the mean of its divisors is an integer number (8148060).

Almost surely, 2^102121224 is an apocalyptic number.

It is an amenable number.

102121224 is an abundant number, since it is smaller than the sum of its proper divisors (158616696).

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

102121224 is a wasteful number, since it uses less digits than its factorization.

102121224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90589 (or 90585 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 102121224 is about 10105.5046385621. The cubic root of 102121224 is about 467.4178970653.

Adding to 102121224 its reverse (422121201), we get a palindrome (524242425).

The spelling of 102121224 in words is "one hundred two million, one hundred twenty-one thousand, two hundred twenty-four".