121220020211 has 8 divisors (see below), whose sum is σ = 124411631760. Its totient is φ = 118069066368.

The previous prime is 121220020199. The next prime is 121220020261. The reversal of 121220020211 is 112020022121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121220020211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121220020261) 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, 10158386 + ... + 10170311.

It is an arithmetic number, because the mean of its divisors is an integer number (15551453970).

Almost surely, 2^121220020211 is an apocalyptic number.

121220020211 is a deficient number, since it is larger than the sum of its proper divisors (3191611549).

121220020211 is an equidigital number, since it uses as much as digits as its factorization.

121220020211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20328853.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121220020211 its reverse (112020022121), we get a palindrome (233240042332).

The spelling of 121220020211 in words is "one hundred twenty-one billion, two hundred twenty million, twenty thousand, two hundred eleven".