12022121101 has 4 divisors (see below), whose sum is σ = 12132415900. Its totient is φ = 11911826304.

The previous prime is 12022121099. The next prime is 12022121107. The reversal of 12022121101 is 10112122021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4661339076 + 7360782025 = 68274^2 + 85795^2 .

It is a cyclic number.

It is not a de Polignac number, because 12022121101 - 2¹ = 12022121099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12022121107) 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, 55147236 + ... + 55147453.

It is an arithmetic number, because the mean of its divisors is an integer number (3033103975).

Almost surely, 2^12022121101 is an apocalyptic number.

It is an amenable number.

12022121101 is a deficient number, since it is larger than the sum of its proper divisors (110294799).

12022121101 is a wasteful number, since it uses less digits than its factorization.

12022121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110294798.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12022121101 its reverse (10112122021), we get a palindrome (22134243122).

The spelling of 12022121101 in words is "twelve billion, twenty-two million, one hundred twenty-one thousand, one hundred one".