102121444 has 24 divisors (see below), whose sum is σ = 180881568. Its totient is φ = 50445120.

The previous prime is 102121421. The next prime is 102121463. The reversal of 102121444 is 444121201.

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, 181107 + ... + 181669.

It is an arithmetic number, because the mean of its divisors is an integer number (7536732).

Almost surely, 2^102121444 is an apocalyptic number.

It is an amenable number.

102121444 is a deficient number, since it is larger than the sum of its proper divisors (78760124).

102121444 is a wasteful number, since it uses less digits than its factorization.

102121444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035 (or 1033 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 102121444 is about 10105.5155237128. The cubic root of 102121444 is about 467.4182327183.

Adding to 102121444 its reverse (444121201), we get a palindrome (546242645).

The spelling of 102121444 in words is "one hundred two million, one hundred twenty-one thousand, four hundred forty-four".