101221102010010 has 128 divisors (see below), whose sum is σ = 250477459453440. Its totient is φ = 26159664006144.

The previous prime is 101221102010003. The next prime is 101221102010027. The reversal of 101221102010010 is 10010201122101.

It is a super-2 number, since 2×101221102010010² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 349330912 + ... + 349620548.

It is an arithmetic number, because the mean of its divisors is an integer number (1956855151980).

Almost surely, 2^{101221102010010} is an apocalyptic number.

101221102010010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 101221102010010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125238729726720).

101221102010010 is an abundant number, since it is smaller than the sum of its proper divisors (149256357443430).

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

101221102010010 is a wasteful number, since it uses less digits than its factorization.

101221102010010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290920.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 101221102010010 its reverse (10010201122101), we get a palindrome (111231303132111).

The spelling of 101221102010010 in words is "one hundred one trillion, two hundred twenty-one billion, one hundred two million, ten thousand, ten".