22010020021 has 8 divisors (see below), whose sum is σ = 24012990144. Its totient is φ = 20007393120.

The previous prime is 22010019991. The next prime is 22010020049. The reversal of 22010020021 is 12002001022.

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

It is not a de Polignac number, because 22010020021 - 2⁷ = 22010019893 is a prime.

It is a super-3 number, since 3×22010020021³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22010020421) 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, 58905 + ... + 217921.

It is an arithmetic number, because the mean of its divisors is an integer number (3001623768).

Almost surely, 2^22010020021 is an apocalyptic number.

It is an amenable number.

22010020021 is a deficient number, since it is larger than the sum of its proper divisors (2002970123).

22010020021 is a wasteful number, since it uses less digits than its factorization.

22010020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171611.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 22010020021 its reverse (12002001022), we get a palindrome (34012021043).

The spelling of 22010020021 in words is "twenty-two billion, ten million, twenty thousand, twenty-one".