1201440444402 has 64 divisors (see below), whose sum is σ = 2647249413120. Its totient is φ = 360473467200.

The previous prime is 1201440444383. The next prime is 1201440444427. The reversal of 1201440444402 is 2044440441021.

It is a self number, because there is not a number n which added to its sum of digits gives 1201440444402.

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, 49008124 + ... + 49032632.

It is an arithmetic number, because the mean of its divisors is an integer number (41363272080).

Almost surely, 2^{1201440444402} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201440444402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1323624706560).

1201440444402 is an abundant number, since it is smaller than the sum of its proper divisors (1445808968718).

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

1201440444402 is a wasteful number, since it uses less digits than its factorization.

1201440444402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31839.

The product of its (nonzero) digits is 16384, while the sum is 30.

Adding to 1201440444402 its reverse (2044440441021), we get a palindrome (3245880885423).

The spelling of 1201440444402 in words is "one trillion, two hundred one billion, four hundred forty million, four hundred forty-four thousand, four hundred two".