121001220220111 has 32 divisors (see below), whose sum is σ = 156063320570880. Its totient is φ = 91033864588800.

The previous prime is 121001220220103. The next prime is 121001220220123. The reversal of 121001220220111 is 111022022100121.

It is not a de Polignac number, because 121001220220111 - 2³ = 121001220220103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001220020111) 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, 141810046 + ... + 142660756.

It is an arithmetic number, because the mean of its divisors is an integer number (4876978767840).

Almost surely, 2^{121001220220111} is an apocalyptic number.

121001220220111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121001220220111 is a deficient number, since it is larger than the sum of its proper divisors (35062100350769).

121001220220111 is a wasteful number, since it uses less digits than its factorization.

121001220220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914455.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121001220220111 its reverse (111022022100121), we get a palindrome (232023242320232).

The spelling of 121001220220111 in words is "one hundred twenty-one trillion, one billion, two hundred twenty million, two hundred twenty thousand, one hundred eleven".