1220022200012 has 48 divisors (see below), whose sum is σ = 2662638048000. Its totient is φ = 475195569600.

The previous prime is 1220022200011. The next prime is 1220022200027. The reversal of 1220022200012 is 2100022200221.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1220022200012.

It is not an unprimeable number, because it can be changed into a prime (1220022200011) 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, 493739 + ... + 1638237.

It is an arithmetic number, because the mean of its divisors is an integer number (55471626000).

Almost surely, 2^{1220022200012} is an apocalyptic number.

It is an amenable number.

1220022200012 is an abundant number, since it is smaller than the sum of its proper divisors (1442615847988).

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

1220022200012 is a wasteful number, since it uses less digits than its factorization.

1220022200012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147982 (or 1147980 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1220022200012 its reverse (2100022200221), we get a palindrome (3320044400233).

The spelling of 1220022200012 in words is "one trillion, two hundred twenty billion, twenty-two million, two hundred thousand, twelve".