22000100021020 has 48 divisors (see below), whose sum is σ = 50400836287200. Its totient is φ = 7999939998720.

The previous prime is 22000100020903. The next prime is 22000100021051. The reversal of 22000100021020 is 2012000100022.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 22000100020988 and 22000100021006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19174096 + ... + 20289064.

It is an arithmetic number, because the mean of its divisors is an integer number (1050017422650).

Almost surely, 2^{22000100021020} is an apocalyptic number.

22000100021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22000100021020 is an abundant number, since it is smaller than the sum of its proper divisors (28400736266180).

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

22000100021020 is a wasteful number, since it uses less digits than its factorization.

22000100021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204678 (or 1204676 counting only the distinct ones).

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

Adding to 22000100021020 its reverse (2012000100022), we get a palindrome (24012100121042).

The spelling of 22000100021020 in words is "twenty-two trillion, one hundred million, twenty-one thousand, twenty".