121203106 has 8 divisors (see below), whose sum is σ = 184365504. Its totient is φ = 59747940.

The previous prime is 121203101. The next prime is 121203107. The reversal of 121203106 is 601302121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 121203106.

It is not an unprimeable number, because it can be changed into a prime (121203101) 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, 426630 + ... + 426913.

It is an arithmetic number, because the mean of its divisors is an integer number (23045688).

Almost surely, 2^121203106 is an apocalyptic number.

121203106 is a deficient number, since it is larger than the sum of its proper divisors (63162398).

121203106 is an equidigital number, since it uses as much as digits as its factorization.

121203106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853616.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 121203106 is about 11009.2282199980. The cubic root of 121203106 is about 494.8853334369.

Adding to 121203106 its reverse (601302121), we get a palindrome (722505227).

The spelling of 121203106 in words is "one hundred twenty-one million, two hundred three thousand, one hundred six".