221122010101220 has 24 divisors (see below), whose sum is σ = 464450814252600. Its totient is φ = 88430786318592.

The previous prime is 221122010101193. The next prime is 221122010101241. The reversal of 221122010101220 is 22101010221122.

It can be written as a sum of positive squares in 4 ways, for example, as 162220928613604 + 58901081487616 = 12736598^2 + 7674704^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1126006985 + ... + 1126203344.

It is an arithmetic number, because the mean of its divisors is an integer number (19352117260525).

Almost surely, 2^{221122010101220} is an apocalyptic number.

221122010101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221122010101220 is an abundant number, since it is smaller than the sum of its proper divisors (243328804151380).

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

221122010101220 is a wasteful number, since it uses less digits than its factorization.

221122010101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252215247 (or 2252215245 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221122010101220 its reverse (22101010221122), we get a palindrome (243223020322342).

The spelling of 221122010101220 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, ten million, one hundred one thousand, two hundred twenty".