120102002101221 has 32 divisors (see below), whose sum is σ = 195492869998848. Its totient is φ = 64021056798720.

The previous prime is 120102002101217. The next prime is 120102002101231. The reversal of 120102002101221 is 122101200201021.

It is not a de Polignac number, because 120102002101221 - 2² = 120102002101217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120102002101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120102002101231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1488544500 + ... + 1488625181.

It is an arithmetic number, because the mean of its divisors is an integer number (6109152187464).

Almost surely, 2^{120102002101221} is an apocalyptic number.

It is an amenable number.

120102002101221 is a deficient number, since it is larger than the sum of its proper divisors (75390867897627).

120102002101221 is a wasteful number, since it uses less digits than its factorization.

120102002101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2977169821.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 120102002101221 its reverse (122101200201021), we get a palindrome (242203202302242).

The spelling of 120102002101221 in words is "one hundred twenty trillion, one hundred two billion, two million, one hundred one thousand, two hundred twenty-one".