121203445106 has 16 divisors (see below), whose sum is σ = 192526278840. Its totient is φ = 57029007360.

The previous prime is 121203445073. The next prime is 121203445159. The reversal of 121203445106 is 601544302121.

It can be written as a sum of positive squares in 4 ways, for example, as 42873429481 + 78330015625 = 207059^2 + 279875^2 .

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, 5450 + ... + 492378.

Almost surely, 2^121203445106 is an apocalyptic number.

121203445106 is a deficient number, since it is larger than the sum of its proper divisors (71322833734).

121203445106 is a wasteful number, since it uses less digits than its factorization.

121203445106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494269.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 121203445106 its reverse (601544302121), we get a palindrome (722747747227).

The spelling of 121203445106 in words is "one hundred twenty-one billion, two hundred three million, four hundred forty-five thousand, one hundred six".