102011021012 has 6 divisors (see below), whose sum is σ = 178519286778. Its totient is φ = 51005510504.

The previous prime is 102011021011. The next prime is 102011021017. The reversal of 102011021012 is 210120110201.

It can be written as a sum of positive squares in only one way, i.e., 101937164176 + 73856836 = 319276^2 + 8594^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102011020984 and 102011021002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102011021011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12751377623 + ... + 12751377630.

It is an arithmetic number, because the mean of its divisors is an integer number (29753214463).

Almost surely, 2^102011021012 is an apocalyptic number.

It is an amenable number.

102011021012 is a deficient number, since it is larger than the sum of its proper divisors (76508265766).

102011021012 is a wasteful number, since it uses less digits than its factorization.

102011021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25502755257 (or 25502755255 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 102011021012 its reverse (210120110201), we get a palindrome (312131131213).

The spelling of 102011021012 in words is "one hundred two billion, eleven million, twenty-one thousand, twelve".