1220011202120 has 32 divisors (see below), whose sum is σ = 2745068901120. Its totient is φ = 487996712640.

The previous prime is 1220011201993. The next prime is 1220011202147. The reversal of 1220011202120 is 212021100221.

It is a junction number, because it is equal to n+sod(n) for n = 1220011202095 and 1220011202104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2760035 + ... + 3171405.

It is an arithmetic number, because the mean of its divisors is an integer number (85783403160).

Almost surely, 2^{1220011202120} is an apocalyptic number.

1220011202120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220011202120 is an abundant number, since it is smaller than the sum of its proper divisors (1525057699000).

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

1220011202120 is a wasteful number, since it uses less digits than its factorization.

1220011202120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485525 (or 485521 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1220011202120 its reverse (212021100221), we get a palindrome (1432032302341).

The spelling of 1220011202120 in words is "one trillion, two hundred twenty billion, eleven million, two hundred two thousand, one hundred twenty".