1220201540452 has 48 divisors (see below), whose sum is σ = 2351374704000. Its totient is φ = 551789086464.

The previous prime is 1220201540443. The next prime is 1220201540483. The reversal of 1220201540452 is 2540451020221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220201540452.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2914128 + ... + 3306439.

It is an arithmetic number, because the mean of its divisors is an integer number (48986973000).

Almost surely, 2^{1220201540452} is an apocalyptic number.

It is an amenable number.

1220201540452 is a deficient number, since it is larger than the sum of its proper divisors (1131173163548).

1220201540452 is a wasteful number, since it uses less digits than its factorization.

1220201540452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6220708 (or 6220706 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 1220201540452 its reverse (2540451020221), we get a palindrome (3760652560673).

The spelling of 1220201540452 in words is "one trillion, two hundred twenty billion, two hundred one million, five hundred forty thousand, four hundred fifty-two".