20002021022101 has 4 divisors (see below), whose sum is σ = 20015364600000. Its totient is φ = 19988677444204.

The previous prime is 20002021022017. The next prime is 20002021022117. The reversal of 20002021022101 is 10122012020002.

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 20002021022101 - 2⁹ = 20002021021589 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 (20002021022161) 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, 6671786701 + ... + 6671789698.

It is an arithmetic number, because the mean of its divisors is an integer number (5003841150000).

Almost surely, 2^{20002021022101} is an apocalyptic number.

It is an amenable number.

20002021022101 is a deficient number, since it is larger than the sum of its proper divisors (13343577899).

20002021022101 is a wasteful number, since it uses less digits than its factorization.

20002021022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13343577898.

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

Adding to 20002021022101 its reverse (10122012020002), we get a palindrome (30124033042103).

The spelling of 20002021022101 in words is "twenty trillion, two billion, twenty-one million, twenty-two thousand, one hundred one".