221220212201120 has 48 divisors (see below), whose sum is σ = 570144819631968. Its totient is φ = 80443713527040.

The previous prime is 221220212201111. The next prime is 221220212201173. The reversal of 221220212201120 is 21102212022122.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 221220212201092 and 221220212201101.

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, 62846649434 + ... + 62846652953.

It is an arithmetic number, because the mean of its divisors is an integer number (11878017075666).

Almost surely, 2^{221220212201120} is an apocalyptic number.

221220212201120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221220212201120 is an abundant number, since it is smaller than the sum of its proper divisors (348924607430848).

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

221220212201120 is a wasteful number, since it uses less digits than its factorization.

221220212201120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125693302413 (or 125693302405 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221220212201120 its reverse (21102212022122), we get a palindrome (242322424223242).

The spelling of 221220212201120 in words is "two hundred twenty-one trillion, two hundred twenty billion, two hundred twelve million, two hundred one thousand, one hundred twenty".