102120020221012 has 12 divisors (see below), whose sum is σ = 178711247086036. Its totient is φ = 51059663910720.

The previous prime is 102120020221001. The next prime is 102120020221013. The reversal of 102120020221012 is 210122020021201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 85161816195856 + 16958204025156 = 9228316^2 + 4118034^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102120020221013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85885689 + ... + 87066592.

Almost surely, 2^{102120020221012} is an apocalyptic number.

It is an amenable number.

102120020221012 is a deficient number, since it is larger than the sum of its proper divisors (76591226865024).

102120020221012 is a wasteful number, since it uses less digits than its factorization.

102120020221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173099898 (or 173099896 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 102120020221012 its reverse (210122020021201), we get a palindrome (312242040242213).

The spelling of 102120020221012 in words is "one hundred two trillion, one hundred twenty billion, twenty million, two hundred twenty-one thousand, twelve".