121110021011 has 8 divisors (see below), whose sum is σ = 146553302880. Its totient is φ = 97702201728.

The previous prime is 121110020981. The next prime is 121110021037. The reversal of 121110021011 is 110120011121.

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 121110021011 - 2²⁶ = 121042912147 is a prime.

It is a super-2 number, since 2×121110021011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121110020983 and 121110021001.

It is not an unprimeable number, because it can be changed into a prime (121110021091) 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 7 ways as a sum of consecutive naturals, for example, 508865516 + ... + 508865753.

It is an arithmetic number, because the mean of its divisors is an integer number (18319162860).

Almost surely, 2^121110021011 is an apocalyptic number.

121110021011 is a deficient number, since it is larger than the sum of its proper divisors (25443281869).

121110021011 is a wasteful number, since it uses less digits than its factorization.

121110021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017731293.

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

Adding to 121110021011 its reverse (110120011121), we get a palindrome (231230032132).

The spelling of 121110021011 in words is "one hundred twenty-one billion, one hundred ten million, twenty-one thousand, eleven".