121011213 has 16 divisors (see below), whose sum is σ = 165816000. Its totient is φ = 78453120.

The previous prime is 121011199. The next prime is 121011223. The reversal of 121011213 is 312110121.

It is not a de Polignac number, because 121011213 - 2⁵ = 121011181 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121011223) 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, 41518 + ... + 44336.

It is an arithmetic number, because the mean of its divisors is an integer number (10363500).

Almost surely, 2^121011213 is an apocalyptic number.

It is an amenable number.

121011213 is a deficient number, since it is larger than the sum of its proper divisors (44804787).

121011213 is a wasteful number, since it uses less digits than its factorization.

121011213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3212.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 121011213 is about 11000.5096700107. The cubic root of 121011213 is about 494.6240222217.

Adding to 121011213 its reverse (312110121), we get a palindrome (433121334).

The spelling of 121011213 in words is "one hundred twenty-one million, eleven thousand, two hundred thirteen".