1220201442 has 16 divisors (see below), whose sum is σ = 2711558880. Its totient is φ = 406733796.

The previous prime is 1220201431. The next prime is 1220201443. The reversal of 1220201442 is 2441020221.

1220201442 is a `hidden beast` number, since 1 + 2 + 20 + 201 + 442 = 666.

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 (1220201443) 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, 11298108 + ... + 11298215.

It is an arithmetic number, because the mean of its divisors is an integer number (169472430).

Almost surely, 2^1220201442 is an apocalyptic number.

1220201442 is an abundant number, since it is smaller than the sum of its proper divisors (1491357438).

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

1220201442 is a wasteful number, since it uses less digits than its factorization.

1220201442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22596334 (or 22596328 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1220201442 is about 34931.3819079635. The cubic root of 1220201442 is about 1068.5885375041.

Adding to 1220201442 its reverse (2441020221), we get a palindrome (3661221663).

The spelling of 1220201442 in words is "one billion, two hundred twenty million, two hundred one thousand, four hundred forty-two".