121102213 has 16 divisors (see below), whose sum is σ = 127475712. Its totient is φ = 114912000.

The previous prime is 121102171. The next prime is 121102243. The reversal of 121102213 is 312201121.

It is a cyclic number.

It is not a de Polignac number, because 121102213 - 2¹³ = 121094021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121102193 and 121102202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121102243) 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, 633948 + ... + 634138.

It is an arithmetic number, because the mean of its divisors is an integer number (7967232).

Almost surely, 2^121102213 is an apocalyptic number.

It is an amenable number.

121102213 is a deficient number, since it is larger than the sum of its proper divisors (6373499).

121102213 is a wasteful number, since it uses less digits than its factorization.

121102213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 121102213 is about 11004.6450646988. The cubic root of 121102213 is about 494.7479763219.

Adding to 121102213 its reverse (312201121), we get a palindrome (433303334).

The spelling of 121102213 in words is "one hundred twenty-one million, one hundred two thousand, two hundred thirteen".