1220211022120 has 32 divisors (see below), whose sum is σ = 2745517559400. Its totient is φ = 488076807168.

The previous prime is 1220211022087. The next prime is 1220211022169. The reversal of 1220211022120 is 212201120221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1220180925924 + 30096196 = 1104618^2 + 5486^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1220211022094 and 1220211022103.

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, 2862196 + ... + 3260764.

Almost surely, 2^{1220211022120} is an apocalyptic number.

1220211022120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220211022120 is an abundant number, since it is smaller than the sum of its proper divisors (1525306537280).

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

1220211022120 is a wasteful number, since it uses less digits than its factorization.

1220211022120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475117 (or 475113 counting only the distinct ones).

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

Adding to 1220211022120 its reverse (212201120221), we get a palindrome (1432412142341).

The spelling of 1220211022120 in words is "one trillion, two hundred twenty billion, two hundred eleven million, twenty-two thousand, one hundred twenty".