22010101020 has 144 divisors (see below), whose sum is σ = 67859824032. Its totient is φ = 5773639680.

The previous prime is 22010101007. The next prime is 22010101031. The reversal of 22010101020 is 2010101022.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 22010100993 and 22010101011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3597484 + ... + 3603596.

It is an arithmetic number, because the mean of its divisors is an integer number (471248778).

Almost surely, 2^22010101020 is an apocalyptic number.

22010101020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22010101020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33929912016).

22010101020 is an abundant number, since it is smaller than the sum of its proper divisors (45849723012).

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

22010101020 is a wasteful number, since it uses less digits than its factorization.

22010101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6452 (or 6447 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 22010101020 its reverse (2010101022), we get a palindrome (24020202042).

The spelling of 22010101020 in words is "twenty-two billion, ten million, one hundred one thousand, twenty".