12022101 has 60 divisors (see below), whose sum is σ = 22594572. Its totient is φ = 6314112.

The previous prime is 12022097. The next prime is 12022103. The reversal of 12022101 is 10122021.

It can be written as a sum of positive squares in 2 ways, for example, as 2099601 + 9922500 = 1449^2 + 3150^2 .

It is not a de Polignac number, because 12022101 - 2² = 12022097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12022103) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 51481 + ... + 51713.

Almost surely, 2^12022101 is an apocalyptic number.

It is an amenable number.

12022101 is a deficient number, since it is larger than the sum of its proper divisors (10572471).

12022101 is a wasteful number, since it uses less digits than its factorization.

12022101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 12022101 is about 3467.2901522659. The cubic root of 12022101 is about 229.0833141422.

Adding to 12022101 its reverse (10122021), we get a palindrome (22144122).

The spelling of 12022101 in words is "twelve million, twenty-two thousand, one hundred one".