20221101100021 has 8 divisors (see below), whose sum is σ = 20563923065760. Its totient is φ = 19878282182352.

The previous prime is 20221101099973. The next prime is 20221101100097. The reversal of 20221101100021 is 12000110112202.

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 20221101100021 - 2¹¹ = 20221101097973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20221101099974 and 20221101100010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221102100021) 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, 15555471 + ... + 16805203.

It is an arithmetic number, because the mean of its divisors is an integer number (2570490383220).

Almost surely, 2^{20221101100021} is an apocalyptic number.

It is an amenable number.

20221101100021 is a deficient number, since it is larger than the sum of its proper divisors (342821965739).

20221101100021 is a wasteful number, since it uses less digits than its factorization.

20221101100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524035.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20221101100021 its reverse (12000110112202), we get a palindrome (32221211212223).

The spelling of 20221101100021 in words is "twenty trillion, two hundred twenty-one billion, one hundred one million, one hundred thousand, twenty-one".