1220000202120 has 64 divisors (see below), whose sum is σ = 4182857838720. Its totient is φ = 278857188864.

The previous prime is 1220000202077. The next prime is 1220000202121. The reversal of 1220000202120 is 212020000221.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1220000202096 and 1220000202105.

It is not an unprimeable number, because it can be changed into a prime (1220000202121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 726189757 + ... + 726191436.

It is an arithmetic number, because the mean of its divisors is an integer number (65357153730).

Almost surely, 2^{1220000202120} is an apocalyptic number.

1220000202120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220000202120 is an abundant number, since it is smaller than the sum of its proper divisors (2962857636600).

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

1220000202120 is a wasteful number, since it uses less digits than its factorization.

1220000202120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452381214 (or 1452381210 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 1220000202120 its reverse (212020000221), we get a palindrome (1432020202341).

The spelling of 1220000202120 in words is "one trillion, two hundred twenty billion, two hundred two thousand, one hundred twenty".