2221221201120 has 144 divisors (see below), whose sum is σ = 7654966536672. Its totient is φ = 586461004800.

The previous prime is 2221221201119. The next prime is 2221221201131. The reversal of 2221221201120 is 211021221222.

It is a happy number.

2221221201120 is a `hidden beast` number, since 2 + 221 + 221 + 201 + 1 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2221221201093 and 2221221201102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7490772 + ... + 7781651.

It is an arithmetic number, because the mean of its divisors is an integer number (53159489838).

Almost surely, 2^{2221221201120} is an apocalyptic number.

2221221201120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221221201120 is an abundant number, since it is smaller than the sum of its proper divisors (5433745335552).

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

2221221201120 is a wasteful number, since it uses less digits than its factorization.

2221221201120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15272545 (or 15272534 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2221221201120 its reverse (211021221222), we get a palindrome (2432242422342).

The spelling of 2221221201120 in words is "two trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred one thousand, one hundred twenty".