121020220311 has 8 divisors (see below), whose sum is σ = 161607402480. Its totient is φ = 80556592512.

The previous prime is 121020220267. The next prime is 121020220357. The reversal of 121020220311 is 113022020121.

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

It is not a de Polignac number, because 121020220311 - 2⁹ = 121020219799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121020220411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30886306 + ... + 30890223.

It is an arithmetic number, because the mean of its divisors is an integer number (20200925310).

Almost surely, 2^121020220311 is an apocalyptic number.

121020220311 is a deficient number, since it is larger than the sum of its proper divisors (40587182169).

121020220311 is an equidigital number, since it uses as much as digits as its factorization.

121020220311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61777185.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 121020220311 its reverse (113022020121), we get a palindrome (234042240432).

The spelling of 121020220311 in words is "one hundred twenty-one billion, twenty million, two hundred twenty thousand, three hundred eleven".