102020221012 has 6 divisors (see below), whose sum is σ = 178535386778. Its totient is φ = 51010110504.

The previous prime is 102020220989. The next prime is 102020221013. The reversal of 102020221012 is 210122020201.

It is a happy number.

102020221012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 82550483856 + 19469737156 = 287316^2 + 139534^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102020220983 and 102020221001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102020221013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12752527623 + ... + 12752527630.

Almost surely, 2^102020221012 is an apocalyptic number.

It is an amenable number.

102020221012 is a deficient number, since it is larger than the sum of its proper divisors (76515165766).

102020221012 is a wasteful number, since it uses less digits than its factorization.

102020221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25505055257 (or 25505055255 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 102020221012 its reverse (210122020201), we get a palindrome (312142241213).

The spelling of 102020221012 in words is "one hundred two billion, twenty million, two hundred twenty-one thousand, twelve".