120011021001221 has 6 divisors (see below), whose sum is σ = 139604657083110. Its totient is φ = 102866589429576.

The previous prime is 120011021001101. The next prime is 120011021001229. The reversal of 120011021001221 is 122100120110021.

It can be written as a sum of positive squares in only one way, i.e., 119613900470596 + 397120530625 = 10936814^2 + 630175^2 .

It is not a de Polignac number, because 120011021001221 - 2²² = 120011016806917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120011021001196 and 120011021001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120011021001229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1224602255066 + ... + 1224602255163.

It is an arithmetic number, because the mean of its divisors is an integer number (23267442847185).

Almost surely, 2^{120011021001221} is an apocalyptic number.

It is an amenable number.

120011021001221 is a deficient number, since it is larger than the sum of its proper divisors (19593636081889).

120011021001221 is an equidigital number, since it uses as much as digits as its factorization.

120011021001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2449204510243 (or 2449204510236 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 120011021001221 its reverse (122100120110021), we get a palindrome (242111141111242).

The spelling of 120011021001221 in words is "one hundred twenty trillion, eleven billion, twenty-one million, one thousand, two hundred twenty-one".