20022001200121 has 4 divisors (see below), whose sum is σ = 20079701492112. Its totient is φ = 19964300908132.

The previous prime is 20022001200083. The next prime is 20022001200137. The reversal of 20022001200121 is 12100210022002.

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 a de Polignac number, because none of the positive numbers 2^k-20022001200121 is a prime.

It is a super-3 number, since 3×20022001200121³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20022001200221) 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, 28850145475 + ... + 28850146168.

It is an arithmetic number, because the mean of its divisors is an integer number (5019925373028).

Almost surely, 2^{20022001200121} is an apocalyptic number.

It is an amenable number.

20022001200121 is a deficient number, since it is larger than the sum of its proper divisors (57700291991).

20022001200121 is an equidigital number, since it uses as much as digits as its factorization.

20022001200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57700291990.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20022001200121 its reverse (12100210022002), we get a palindrome (32122211222123).

The spelling of 20022001200121 in words is "twenty trillion, twenty-two billion, one million, two hundred thousand, one hundred twenty-one".