121021102213 has 16 divisors (see below), whose sum is σ = 137686832640. Its totient is φ = 105372518400.

The previous prime is 121021102187. The next prime is 121021102217. The reversal of 121021102213 is 312201120121.

It is a cyclic number.

It is not a de Polignac number, because 121021102213 - 2²⁵ = 120987547781 is a prime.

It is a super-2 number, since 2×121021102213² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021102217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1796308 + ... + 1862461.

It is an arithmetic number, because the mean of its divisors is an integer number (8605427040).

Almost surely, 2^121021102213 is an apocalyptic number.

It is an amenable number.

121021102213 is a deficient number, since it is larger than the sum of its proper divisors (16665730427).

121021102213 is a wasteful number, since it uses less digits than its factorization.

121021102213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3658908.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 121021102213 its reverse (312201120121), we get a palindrome (433222222334).

The spelling of 121021102213 in words is "one hundred twenty-one billion, twenty-one million, one hundred two thousand, two hundred thirteen".