101221020010 has 16 divisors (see below), whose sum is σ = 198761275872. Its totient is φ = 36807643600.

The previous prime is 101221019929. The next prime is 101221020011. The reversal of 101221020010 is 10020122101.

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

It is not an unprimeable number, because it can be changed into a prime (101221020011) 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 7 ways as a sum of consecutive naturals, for example, 460095436 + ... + 460095655.

It is an arithmetic number, because the mean of its divisors is an integer number (12422579742).

Almost surely, 2^101221020010 is an apocalyptic number.

101221020010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101221020010 is a deficient number, since it is larger than the sum of its proper divisors (97540255862).

101221020010 is a wasteful number, since it uses less digits than its factorization.

101221020010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920191109.

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

Adding to 101221020010 its reverse (10020122101), we get a palindrome (111241142111).

The spelling of 101221020010 in words is "one hundred one billion, two hundred twenty-one million, twenty thousand, ten".