121202213 has 4 divisors (see below), whose sum is σ = 132220608. Its totient is φ = 110183820.

The previous prime is 121202209. The next prime is 121202239. The reversal of 121202213 is 312202121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121202213 - 2² = 121202209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121202413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5509181 + ... + 5509202.

It is an arithmetic number, because the mean of its divisors is an integer number (33055152).

Almost surely, 2^121202213 is an apocalyptic number.

It is an amenable number.

121202213 is a deficient number, since it is larger than the sum of its proper divisors (11018395).

121202213 is a wasteful number, since it uses less digits than its factorization.

121202213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11018394.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 121202213 is about 11009.1876630385. The cubic root of 121202213 is about 494.8841180288.

Adding to 121202213 its reverse (312202121), we get a palindrome (433404334).

The spelling of 121202213 in words is "one hundred twenty-one million, two hundred two thousand, two hundred thirteen".