121100202106 has 32 divisors (see below), whose sum is σ = 200542252176. Its totient is φ = 54489024000.

The previous prime is 121100202103. The next prime is 121100202127. The reversal of 121100202106 is 601202001121.

It can be written as a sum of positive squares in 8 ways, for example, as 229249881 + 120870952225 = 15141^2 + 347665^2 .

It is a super-2 number, since 2×121100202106² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121100202106.

It is not an unprimeable number, because it can be changed into a prime (121100202103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1431016 + ... + 1513276.

Almost surely, 2^121100202106 is an apocalyptic number.

121100202106 is a deficient number, since it is larger than the sum of its proper divisors (79442050070).

121100202106 is a wasteful number, since it uses less digits than its factorization.

121100202106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83698.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 121100202106 its reverse (601202001121), we get a palindrome (722302203227).

The spelling of 121100202106 in words is "one hundred twenty-one billion, one hundred million, two hundred two thousand, one hundred six".