1220120312002 has 16 divisors (see below), whose sum is σ = 1893298977792. Its totient is φ = 589105661760.

The previous prime is 1220120311997. The next prime is 1220120312053. The reversal of 1220120312002 is 2002130210221.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21223303 + ... + 21280714.

It is an arithmetic number, because the mean of its divisors is an integer number (118331186112).

Almost surely, 2^{1220120312002} is an apocalyptic number.

1220120312002 is a deficient number, since it is larger than the sum of its proper divisors (673178665790).

1220120312002 is a wasteful number, since it uses less digits than its factorization.

1220120312002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42504513.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1220120312002 its reverse (2002130210221), we get a palindrome (3222250522223).

The spelling of 1220120312002 in words is "one trillion, two hundred twenty billion, one hundred twenty million, three hundred twelve thousand, two".