101221102010 has 64 divisors (see below), whose sum is σ = 209121454080. Its totient is φ = 34555429440.

The previous prime is 101221101997. The next prime is 101221102033. The reversal of 101221102010 is 10201122101.

It is a super-2 number, since 2×101221102010² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101221101982 and 101221102000.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28343525 + ... + 28347095.

It is an arithmetic number, because the mean of its divisors is an integer number (3267522720).

Almost surely, 2^101221102010 is an apocalyptic number.

101221102010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101221102010 is an abundant number, since it is smaller than the sum of its proper divisors (107900352070).

101221102010 is a wasteful number, since it uses less digits than its factorization.

101221102010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5211.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 101221102010 its reverse (10201122101), we get a palindrome (111422224111).

The spelling of 101221102010 in words is "one hundred one billion, two hundred twenty-one million, one hundred two thousand, ten".