102020102221012 has 24 divisors (see below), whose sum is σ = 178707202458120. Its totient is φ = 50960907204480.

The previous prime is 102020102220991. The next prime is 102020102221019. The reversal of 102020102221012 is 210122201020201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 23049082494916 + 78971019726096 = 4800946^2 + 8886564^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102020102221019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71964138 + ... + 73368094.

It is an arithmetic number, because the mean of its divisors is an integer number (7446133435755).

Almost surely, 2^{102020102221012} is an apocalyptic number.

It is an amenable number.

102020102221012 is a deficient number, since it is larger than the sum of its proper divisors (76687100237108).

102020102221012 is a wasteful number, since it uses less digits than its factorization.

102020102221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421451 (or 1421449 counting only the distinct ones).

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

Adding to 102020102221012 its reverse (210122201020201), we get a palindrome (312142303241213).

The spelling of 102020102221012 in words is "one hundred two trillion, twenty billion, one hundred two million, two hundred twenty-one thousand, twelve".