22001210220 has 48 divisors (see below), whose sum is σ = 67203698688. Its totient is φ = 5333626560.

The previous prime is 22001210171. The next prime is 22001210239. The reversal of 22001210220 is 2201210022.

It is a super-2 number, since 2×22001210220² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 22001210196 and 22001210205.

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, 16666924 + ... + 16668243.

It is an arithmetic number, because the mean of its divisors is an integer number (1400077056).

Almost surely, 2^22001210220 is an apocalyptic number.

22001210220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22001210220 is an abundant number, since it is smaller than the sum of its proper divisors (45202488468).

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

22001210220 is a wasteful number, since it uses less digits than its factorization.

22001210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33335190 (or 33335188 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22001210220 its reverse (2201210022), we get a palindrome (24202420242).

It can be divided in two parts, 22001 and 210220, that added together give a triangular number (232221 = T₆₈₁).

The spelling of 22001210220 in words is "twenty-two billion, one million, two hundred ten thousand, two hundred twenty".