120121021212211 has 8 divisors (see below), whose sum is σ = 127105186406400. Its totient is φ = 113203056636360.

The previous prime is 120121021212197. The next prime is 120121021212271. The reversal of 120121021212211 is 112212120121021.

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 120121021212211 - 2⁹ = 120121021211699 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120121021212271) 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, 16550150851 + ... + 16550158108.

It is an arithmetic number, because the mean of its divisors is an integer number (15888148300800).

Almost surely, 2^{120121021212211} is an apocalyptic number.

120121021212211 is a deficient number, since it is larger than the sum of its proper divisors (6984165194189).

120121021212211 is a wasteful number, since it uses less digits than its factorization.

120121021212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33100309169.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 120121021212211 its reverse (112212120121021), we get a palindrome (232333141333232).

The spelling of 120121021212211 in words is "one hundred twenty trillion, one hundred twenty-one billion, twenty-one million, two hundred twelve thousand, two hundred eleven".