1220201201212 has 96 divisors (see below), whose sum is σ = 2506478607360. Its totient is φ = 509033203200.

The previous prime is 1220201201183. The next prime is 1220201201221. The reversal of 1220201201212 is 2121021020221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40473408 + ... + 40503544.

It is an arithmetic number, because the mean of its divisors is an integer number (26109152160).

Almost surely, 2^{1220201201212} is an apocalyptic number.

It is an amenable number.

1220201201212 is an abundant number, since it is smaller than the sum of its proper divisors (1286277406148).

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

1220201201212 is a wasteful number, since it uses less digits than its factorization.

1220201201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30491 (or 30489 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1220201201212 its reverse (2121021020221), we get a palindrome (3341222221433).

The spelling of 1220201201212 in words is "one trillion, two hundred twenty billion, two hundred one million, two hundred one thousand, two hundred twelve".