102101221021012 has 12 divisors (see below), whose sum is σ = 178978447308276. Its totient is φ = 50964521790080.

The previous prime is 102101221020977. The next prime is 102101221021013. The reversal of 102101221021012 is 210120122101201.

It can be written as a sum of positive squares in 2 ways, for example, as 41849565327376 + 60251655693636 = 6469124^2 + 7762194^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102101221021013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21522177439 + ... + 21522182182.

It is an arithmetic number, because the mean of its divisors is an integer number (14914870609023).

Almost surely, 2^{102101221021012} is an apocalyptic number.

It is an amenable number.

102101221021012 is a deficient number, since it is larger than the sum of its proper divisors (76877226287264).

102101221021012 is a wasteful number, since it uses less digits than its factorization.

102101221021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43044360218 (or 43044360216 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 102101221021012 its reverse (210120122101201), we get a palindrome (312221343122213).

The spelling of 102101221021012 in words is "one hundred two trillion, one hundred one billion, two hundred twenty-one million, twenty-one thousand, twelve".