20022121101020 has 24 divisors (see below), whose sum is σ = 42064430662800. Its totient is φ = 8005424373632.

The previous prime is 20022121101001. The next prime is 20022121101049. The reversal of 20022121101020 is 2010112122002.

It is a junction number, because it is equal to n+sod(n) for n = 20022121100986 and 20022121101004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213956225 + ... + 214049784.

It is an arithmetic number, because the mean of its divisors is an integer number (1752684610950).

Almost surely, 2^{20022121101020} is an apocalyptic number.

20022121101020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20022121101020 is an abundant number, since it is smaller than the sum of its proper divisors (22042309561780).

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

20022121101020 is a wasteful number, since it uses less digits than its factorization.

20022121101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428008357 (or 428008355 counting only the distinct ones).

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

Adding to 20022121101020 its reverse (2010112122002), we get a palindrome (22032233223022).

The spelling of 20022121101020 in words is "twenty trillion, twenty-two billion, one hundred twenty-one million, one hundred one thousand, twenty".