1201100122 has 4 divisors (see below), whose sum is σ = 1801650186. Its totient is φ = 600550060.

The previous prime is 1201100107. The next prime is 1201100137. The reversal of 1201100122 is 2210011021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2210011021 = 12197 ⋅181193.

It is an interprime number because it is at equal distance from previous prime (1201100107) and next prime (1201100137).

It can be written as a sum of positive squares in only one way, i.e., 1200691801 + 408321 = 34651^2 + 639^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1201100099 and 1201100108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300275029 + ... + 300275032.

Almost surely, 2^1201100122 is an apocalyptic number.

1201100122 is a deficient number, since it is larger than the sum of its proper divisors (600550064).

1201100122 is an equidigital number, since it uses as much as digits as its factorization.

1201100122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600550063.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1201100122 is about 34656.8914070492. The cubic root of 1201100122 is about 1062.9832072386.

Adding to 1201100122 its reverse (2210011021), we get a palindrome (3411111143).

The spelling of 1201100122 in words is "one billion, two hundred one million, one hundred thousand, one hundred twenty-two".