121220020011 has 8 divisors (see below), whose sum is σ = 161649006480. Its totient is φ = 80802190112.

The previous prime is 121220019997. The next prime is 121220020087. The reversal of 121220020011 is 110020022121.

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 121220020011 - 2¹⁷ = 121219888939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121220025011) 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, 2763756 + ... + 2807273.

It is an arithmetic number, because the mean of its divisors is an integer number (20206125810).

Almost surely, 2^121220020011 is an apocalyptic number.

121220020011 is a deficient number, since it is larger than the sum of its proper divisors (40428986469).

121220020011 is an equidigital number, since it uses as much as digits as its factorization.

121220020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5578285.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121220020011 its reverse (110020022121), we get a palindrome (231240042132).

The spelling of 121220020011 in words is "one hundred twenty-one billion, two hundred twenty million, twenty thousand, eleven".