1200220120221 has 8 divisors (see below), whose sum is σ = 1601055909600. Its totient is φ = 799765538832.

The previous prime is 1200220120207. The next prime is 1200220120249. The reversal of 1200220120221 is 1220210220021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1200220120221 - 2²⁶ = 1200153011357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1200220120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200220120261) 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, 95294650 + ... + 95307243.

It is an arithmetic number, because the mean of its divisors is an integer number (200131988700).

Almost surely, 2^{1200220120221} is an apocalyptic number.

It is an amenable number.

1200220120221 is a deficient number, since it is larger than the sum of its proper divisors (400835789379).

1200220120221 is a wasteful number, since it uses less digits than its factorization.

1200220120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190603995.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1200220120221 its reverse (1220210220021), we get a palindrome (2420430340242).

The spelling of 1200220120221 in words is "one trillion, two hundred billion, two hundred twenty million, one hundred twenty thousand, two hundred twenty-one".