121010201011 has 6 divisors (see below), whose sum is σ = 140766968580. Its totient is φ = 103723029396.

The previous prime is 121010200951. The next prime is 121010201017. The reversal of 121010201011 is 110102010121.

It is not a de Polignac number, because 121010201011 - 2¹⁵ = 121010168243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121010201017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1234797921 + ... + 1234798018.

It is an arithmetic number, because the mean of its divisors is an integer number (23461161430).

Almost surely, 2^121010201011 is an apocalyptic number.

121010201011 is a deficient number, since it is larger than the sum of its proper divisors (19756767569).

121010201011 is an equidigital number, since it uses as much as digits as its factorization.

121010201011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2469595953 (or 2469595946 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 121010201011 its reverse (110102010121), we get a palindrome (231112211132).

It can be divided in two parts, 1 and 21010201011, that added together give a palindrome (21010201012).

The spelling of 121010201011 in words is "one hundred twenty-one billion, ten million, two hundred one thousand, eleven".