121120011 has 18 divisors (see below), whose sum is σ = 177043100. Its totient is φ = 79792416.

The previous prime is 121120009. The next prime is 121120057. The reversal of 121120011 is 110021121.

It is a happy number.

It is not a de Polignac number, because 121120011 - 2¹ = 121120009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121119975 and 121120002.

It is not an unprimeable number, because it can be changed into a prime (121120061) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 70440 + ... + 72138.

Almost surely, 2^121120011 is an apocalyptic number.

121120011 is a deficient number, since it is larger than the sum of its proper divisors (55923089).

121120011 is an equidigital number, since it uses as much as digits as its factorization.

121120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883 (or 1791 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 121120011 is about 11005.4536935103. The cubic root of 121120011 is about 494.7722123039.

Adding to 121120011 its reverse (110021121), we get a palindrome (231141132).

The spelling of 121120011 in words is "one hundred twenty-one million, one hundred twenty thousand, eleven".