20211022101020 has 24 divisors (see below), whose sum is σ = 42457066890000. Its totient is φ = 8081757320832.

The previous prime is 20211022100911. The next prime is 20211022101029. The reversal of 20211022101020 is 2010122011202.

It is a junction number, because it is equal to n+sod(n) for n = 20211022100986 and 20211022101004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211022101029) 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, 165657470 + ... + 165779429.

It is an arithmetic number, because the mean of its divisors is an integer number (1769044453750).

Almost surely, 2^{20211022101020} is an apocalyptic number.

20211022101020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211022101020 is an abundant number, since it is smaller than the sum of its proper divisors (22246044788980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20211022101020 is a wasteful number, since it uses less digits than its factorization.

20211022101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331439957 (or 331439955 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20211022101020 its reverse (2010122011202), we get a palindrome (22221144112222).

The spelling of 20211022101020 in words is "twenty trillion, two hundred eleven billion, twenty-two million, one hundred one thousand, twenty".