102122020244 has 6 divisors (see below), whose sum is σ = 178713535434. Its totient is φ = 51061010120.

The previous prime is 102122020243. The next prime is 102122020261. The reversal of 102122020244 is 442020221201.

It can be written as a sum of positive squares in only one way, i.e., 59917248400 + 42204771844 = 244780^2 + 205438^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102122020243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12765252527 + ... + 12765252534.

It is an arithmetic number, because the mean of its divisors is an integer number (29785589239).

Almost surely, 2^102122020244 is an apocalyptic number.

It is an amenable number.

102122020244 is a deficient number, since it is larger than the sum of its proper divisors (76591515190).

102122020244 is a wasteful number, since it uses less digits than its factorization.

102122020244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25530505065 (or 25530505063 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 102122020244 its reverse (442020221201), we get a palindrome (544142241445).

The spelling of 102122020244 in words is "one hundred two billion, one hundred twenty-two million, twenty thousand, two hundred forty-four".