1220001022212 has 24 divisors (see below), whose sum is σ = 3253336059456. Its totient is φ = 348571720608.

The previous prime is 1220001022189. The next prime is 1220001022217. The reversal of 1220001022212 is 2122201000221.

It is a junction number, because it is equal to n+sod(n) for n = 1220001022191 and 1220001022200.

It is not an unprimeable number, because it can be changed into a prime (1220001022217) 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, 7261910763 + ... + 7261910930.

It is an arithmetic number, because the mean of its divisors is an integer number (135555669144).

Almost surely, 2^{1220001022212} is an apocalyptic number.

1220001022212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1220001022212 is an abundant number, since it is smaller than the sum of its proper divisors (2033335037244).

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

1220001022212 is a wasteful number, since it uses less digits than its factorization.

1220001022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14523821707 (or 14523821705 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1220001022212 its reverse (2122201000221), we get a palindrome (3342202022433).

The spelling of 1220001022212 in words is "one trillion, two hundred twenty billion, one million, twenty-two thousand, two hundred twelve".