121020011101 has 12 divisors (see below), whose sum is σ = 133032434976. Its totient is φ = 110009558120.

The previous prime is 121020011017. The next prime is 121020011117. The reversal of 121020011101 is 101110020121.

It is not a de Polignac number, because 121020011101 - 2⁷ = 121020010973 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 (121020011131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1905606 + ... + 1968088.

It is an arithmetic number, because the mean of its divisors is an integer number (11086036248).

Almost surely, 2^121020011101 is an apocalyptic number.

121020011101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121020011101 is a deficient number, since it is larger than the sum of its proper divisors (12012423875).

121020011101 is a wasteful number, since it uses less digits than its factorization.

121020011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78512 (or 78501 counting only the distinct ones).

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

Adding to 121020011101 its reverse (101110020121), we get a palindrome (222130031222).

The spelling of 121020011101 in words is "one hundred twenty-one billion, twenty million, eleven thousand, one hundred one".