121010001020111 has 16 divisors (see below), whose sum is σ = 139602017742336. Its totient is φ = 102744374632416.

The previous prime is 121010001020063. The next prime is 121010001020173. The reversal of 121010001020111 is 111020100010121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121010001020111 is a prime.

It is a super-3 number, since 3×121010001020111³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121010001020092 and 121010001020101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121010001020611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1296965 + ... + 15610961.

It is an arithmetic number, because the mean of its divisors is an integer number (8725126108896).

Almost surely, 2^{121010001020111} is an apocalyptic number.

121010001020111 is a deficient number, since it is larger than the sum of its proper divisors (18592016722225).

121010001020111 is a wasteful number, since it uses less digits than its factorization.

121010001020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14325398.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 121010001020111 its reverse (111020100010121), we get a palindrome (232030101030232).

The spelling of 121010001020111 in words is "one hundred twenty-one trillion, ten billion, one million, twenty thousand, one hundred eleven".