101221200010 has 32 divisors (see below), whose sum is σ = 208315152000. Its totient is φ = 34689630912.

The previous prime is 101221200007. The next prime is 101221200011. The reversal of 101221200010 is 10002122101.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a self number, because there is not a number n which added to its sum of digits gives 101221200010.

It is not an unprimeable number, because it can be changed into a prime (101221200011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141760 + ... + 471739.

It is an arithmetic number, because the mean of its divisors is an integer number (6509848500).

Almost surely, 2^101221200010 is an apocalyptic number.

101221200010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101221200010 is an abundant number, since it is smaller than the sum of its proper divisors (107093951990).

101221200010 is a wasteful number, since it uses less digits than its factorization.

101221200010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615870.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 101221200010 its reverse (10002122101), we get a palindrome (111223322111).

The spelling of 101221200010 in words is "one hundred one billion, two hundred twenty-one million, two hundred thousand, ten".