120111021001221 has 8 divisors (see below), whose sum is σ = 160148241359904. Its totient is φ = 80073907321680.

The previous prime is 120111021001219. The next prime is 120111021001241. The reversal of 120111021001221 is 122100120111021.

It is a happy number.

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

It is not a de Polignac number, because 120111021001221 - 2¹ = 120111021001219 is a prime.

It is a super-2 number, since 2×120111021001221² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 120111021001221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120111021001241) 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, 24004615 + ... + 28573476.

It is an arithmetic number, because the mean of its divisors is an integer number (20018530169988).

Almost surely, 2^{120111021001221} is an apocalyptic number.

It is an amenable number.

120111021001221 is a deficient number, since it is larger than the sum of its proper divisors (40037220358683).

120111021001221 is an equidigital number, since it uses as much as digits as its factorization.

120111021001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53339571.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 120111021001221 its reverse (122100120111021), we get a palindrome (242211141112242).

The spelling of 120111021001221 in words is "one hundred twenty trillion, one hundred eleven billion, twenty-one million, one thousand, two hundred twenty-one".