12122021022001 has 4 divisors (see below), whose sum is σ = 13224022933104. Its totient is φ = 11020019110900.

The previous prime is 12122021021987. The next prime is 12122021022011. The reversal of 12122021022001 is 10022012022121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12122021022001 - 2⁹ = 12122021021489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12122021022011) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 551000955535 + ... + 551000955556.

It is an arithmetic number, because the mean of its divisors is an integer number (3306005733276).

Almost surely, 2^{12122021022001} is an apocalyptic number.

12122021022001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12122021022001 is a deficient number, since it is larger than the sum of its proper divisors (1102001911103).

12122021022001 is a wasteful number, since it uses less digits than its factorization.

12122021022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102001911102.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12122021022001 its reverse (10022012022121), we get a palindrome (22144033044122).

The spelling of 12122021022001 in words is "twelve trillion, one hundred twenty-two billion, twenty-one million, twenty-two thousand, one".