121630206 has 16 divisors (see below), whose sum is σ = 257570064. Its totient is φ = 38158464.

The previous prime is 121630183. The next prime is 121630237. The reversal of 121630206 is 602036121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 596125 + ... + 596328.

It is an arithmetic number, because the mean of its divisors is an integer number (16098129).

Almost surely, 2^121630206 is an apocalyptic number.

121630206 is an abundant number, since it is smaller than the sum of its proper divisors (135939858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121630206 is a wasteful number, since it uses less digits than its factorization.

121630206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192475.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 121630206 is about 11028.6085251042. The cubic root of 121630206 is about 495.4659504007.

Adding to 121630206 its reverse (602036121), we get a palindrome (723666327).

The spelling of 121630206 in words is "one hundred twenty-one million, six hundred thirty thousand, two hundred six".