1220001120212 has 24 divisors (see below), whose sum is σ = 2464160684160. Its totient is φ = 517680813600.

The previous prime is 1220001120211. The next prime is 1220001120229. The reversal of 1220001120212 is 2120211000221.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220001120211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215697512 + ... + 215703167.

It is an arithmetic number, because the mean of its divisors is an integer number (102673361840).

Almost surely, 2^{1220001120212} is an apocalyptic number.

It is an amenable number.

1220001120212 is an abundant number, since it is smaller than the sum of its proper divisors (1244159563948).

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

1220001120212 is a wasteful number, since it uses less digits than its factorization.

1220001120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431400791 (or 431400789 counting only the distinct ones).

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

Adding to 1220001120212 its reverse (2120211000221), we get a palindrome (3340212120433).

The spelling of 1220001120212 in words is "one trillion, two hundred twenty billion, one million, one hundred twenty thousand, two hundred twelve".