101221110211220 has 96 divisors (see below), whose sum is σ = 217156652697600. Its totient is φ = 39626115984000.

The previous prime is 101221110211213. The next prime is 101221110211231. The reversal of 101221110211220 is 22112011122101.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 54070841 + ... + 55911519.

It is an arithmetic number, because the mean of its divisors is an integer number (2262048465600).

Almost surely, 2^{101221110211220} is an apocalyptic number.

101221110211220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101221110211220 is an abundant number, since it is smaller than the sum of its proper divisors (115935542486380).

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

101221110211220 is a wasteful number, since it uses less digits than its factorization.

101221110211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1841109 (or 1841107 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 101221110211220 its reverse (22112011122101), we get a palindrome (123333121333321).

The spelling of 101221110211220 in words is "one hundred one trillion, two hundred twenty-one billion, one hundred ten million, two hundred eleven thousand, two hundred twenty".