121204213 has 8 divisors (see below), whose sum is σ = 131525856. Its totient is φ = 111025200.

The previous prime is 121204201. The next prime is 121204217. The reversal of 121204213 is 312402121.

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

It is not a de Polignac number, because 121204213 - 2⁹ = 121203701 is a prime.

It is a super-2 number, since 2×121204213² = 29380922497898738, which 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 (121204217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33883 + ... + 37288.

It is an arithmetic number, because the mean of its divisors is an integer number (16440732).

Almost surely, 2^121204213 is an apocalyptic number.

121204213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121204213 is a deficient number, since it is larger than the sum of its proper divisors (10321643).

121204213 is a wasteful number, since it uses less digits than its factorization.

121204213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71315.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 121204213 is about 11009.2784958870. The cubic root of 121204213 is about 494.8868400990.

Adding to 121204213 its reverse (312402121), we get a palindrome (433606334).

The spelling of 121204213 in words is "one hundred twenty-one million, two hundred four thousand, two hundred thirteen".