10102101221020 has 12 divisors (see below), whose sum is σ = 21214412564184. Its totient is φ = 4040840488400.

The previous prime is 10102101220979. The next prime is 10102101221021. The reversal of 10102101221020 is 2012210120101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10102101221021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252552530506 + ... + 252552530545.

It is an arithmetic number, because the mean of its divisors is an integer number (1767867713682).

Almost surely, 2^{10102101221020} is an apocalyptic number.

10102101221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10102101221020 is an abundant number, since it is smaller than the sum of its proper divisors (11112311343164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10102101221020 is a wasteful number, since it uses less digits than its factorization.

10102101221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505105061060 (or 505105061058 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10102101221020 its reverse (2012210120101), we get a palindrome (12114311341121).

The spelling of 10102101221020 in words is "ten trillion, one hundred two billion, one hundred one million, two hundred twenty-one thousand, twenty".