121011012211 has 8 divisors (see below), whose sum is σ = 126364361760. Its totient is φ = 115665329472.

The previous prime is 121011012197. The next prime is 121011012233. The reversal of 121011012211 is 112210110121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121011012211 is a prime.

It is a super-2 number, since 2×121011012211² (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 = 121011012191 and 121011012200.

It is not an unprimeable number, because it can be changed into a prime (121011012251) 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, 1884426 + ... + 1947583.

It is an arithmetic number, because the mean of its divisors is an integer number (15795545220).

Almost surely, 2^121011012211 is an apocalyptic number.

121011012211 is a deficient number, since it is larger than the sum of its proper divisors (5353349549).

121011012211 is a wasteful number, since it uses less digits than its factorization.

121011012211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3833405.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121011012211 its reverse (112210110121), we get a palindrome (233221122332).

The spelling of 121011012211 in words is "one hundred twenty-one billion, eleven million, twelve thousand, two hundred eleven".