22101021021021 has 8 divisors (see below), whose sum is σ = 30153331005600. Its totient is φ = 14391362525232.

The previous prime is 22101021021011. The next prime is 22101021021047. The reversal of 22101021021021 is 12012012010122.

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

It is not a de Polignac number, because 22101021021021 - 2⁶ = 22101021020957 is a prime.

It is a super-2 number, since 2×22101021021021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22101021021011) 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, 85662872046 + ... + 85662872303.

It is an arithmetic number, because the mean of its divisors is an integer number (3769166375700).

Almost surely, 2^{22101021021021} is an apocalyptic number.

It is an amenable number.

22101021021021 is a deficient number, since it is larger than the sum of its proper divisors (8052309984579).

22101021021021 is a wasteful number, since it uses less digits than its factorization.

22101021021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171325744395.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22101021021021 its reverse (12012012010122), we get a palindrome (34113033031143).

The spelling of 22101021021021 in words is "twenty-two trillion, one hundred one billion, twenty-one million, twenty-one thousand, twenty-one".