121220101101211 has 32 divisors (see below), whose sum is σ = 142747992750080. Its totient is φ = 100794672950400.

The previous prime is 121220101101161. The next prime is 121220101101251. The reversal of 121220101101211 is 112101101022121.

It is a cyclic number.

It is not a de Polignac number, because 121220101101211 - 2²⁵ = 121220067546779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121220101101251) 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, 28614841 + ... + 32576821.

It is an arithmetic number, because the mean of its divisors is an integer number (4460874773440).

Almost surely, 2^{121220101101211} is an apocalyptic number.

121220101101211 is a deficient number, since it is larger than the sum of its proper divisors (21527891648869).

121220101101211 is an equidigital number, since it uses as much as digits as its factorization.

121220101101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3963035.

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

Adding to 121220101101211 its reverse (112101101022121), we get a palindrome (233321202123332).

The spelling of 121220101101211 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred one million, one hundred one thousand, two hundred eleven".