221220210001120 has 48 divisors (see below), whose sum is σ = 570144813961968. Its totient is φ = 80443712727040.

The previous prime is 221220210001073. The next prime is 221220210001163. The reversal of 221220210001120 is 21100012022122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 221220210001094 and 221220210001103.

It is a congruent number.

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, 62846648809 + ... + 62846652328.

It is an arithmetic number, because the mean of its divisors is an integer number (11878016957541).

Almost surely, 2^{221220210001120} is an apocalyptic number.

221220210001120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221220210001120 is an abundant number, since it is smaller than the sum of its proper divisors (348924603960848).

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

221220210001120 is a wasteful number, since it uses less digits than its factorization.

221220210001120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125693301163 (or 125693301155 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221220210001120 its reverse (21100012022122), we get a palindrome (242320222023242).

The spelling of 221220210001120 in words is "two hundred twenty-one trillion, two hundred twenty billion, two hundred ten million, one thousand, one hundred twenty".