20022100210021 has 8 divisors (see below), whose sum is σ = 24642584873984. Its totient is φ = 15841661704560.

The previous prime is 20022100209977. The next prime is 20022100210027. The reversal of 20022100210021 is 12001200122002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20022100210021 - 2¹⁷ = 20022100078949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

20022100210021 is a modest number, since divided by 210021 gives 200221 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 20022100209983 and 20022100210010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022100210027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110011539525 + ... + 110011539706.

It is an arithmetic number, because the mean of its divisors is an integer number (3080323109248).

Almost surely, 2^{20022100210021} is an apocalyptic number.

It is an amenable number.

20022100210021 is a deficient number, since it is larger than the sum of its proper divisors (4620484663963).

20022100210021 is a wasteful number, since it uses less digits than its factorization.

20022100210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220023079251.

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

Adding to 20022100210021 its reverse (12001200122002), we get a palindrome (32023300332023).

The spelling of 20022100210021 in words is "twenty trillion, twenty-two billion, one hundred million, two hundred ten thousand, twenty-one".