1220201122212 has 48 divisors (see below), whose sum is σ = 3237053807680. Its totient is φ = 397274782464.

The previous prime is 1220201122171. The next prime is 1220201122219. The reversal of 1220201122212 is 2122211020221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1220201122219) 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, 131369293 + ... + 131378580.

Almost surely, 2^{1220201122212} is an apocalyptic number.

1220201122212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1220201122212 is an abundant number, since it is smaller than the sum of its proper divisors (2016852685468).

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

1220201122212 is a wasteful number, since it uses less digits than its factorization.

1220201122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262747929 (or 262747921 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1220201122212 its reverse (2122211020221), we get a palindrome (3342412142433).

The spelling of 1220201122212 in words is "one trillion, two hundred twenty billion, two hundred one million, one hundred twenty-two thousand, two hundred twelve".