121120021211 has 8 divisors (see below), whose sum is σ = 138632301024. Its totient is φ = 103660096320.

The previous prime is 121120021199. The next prime is 121120021223. The reversal of 121120021211 is 112120021121.

It is an interprime number because it is at equal distance from previous prime (121120021199) and next prime (121120021223).

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

It is a cyclic number.

It is not a de Polignac number, because 121120021211 - 2⁶ = 121120021147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121120021241) 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, 13083770 + ... + 13093023.

It is an arithmetic number, because the mean of its divisors is an integer number (17329037628).

Almost surely, 2^121120021211 is an apocalyptic number.

121120021211 is a deficient number, since it is larger than the sum of its proper divisors (17512279813).

121120021211 is an equidigital number, since it uses as much as digits as its factorization.

121120021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26177461.

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

Adding to 121120021211 its reverse (112120021121), we get a palindrome (233240042332).

The spelling of 121120021211 in words is "one hundred twenty-one billion, one hundred twenty million, twenty-one thousand, two hundred eleven".