20210222210220 has 144 divisors (see below), whose sum is σ = 70066573274880. Its totient is φ = 4619184663168.

The previous prime is 20210222210203. The next prime is 20210222210279. The reversal of 20210222210220 is 2201222201202.

20210222210220 is a `hidden beast` number, since 2 + 0 + 2 + 10 + 222 + 210 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20210222210193 and 20210222210202.

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, 19559311 + ... + 20566649.

It is an arithmetic number, because the mean of its divisors is an integer number (486573425520).

Almost surely, 2^{20210222210220} is an apocalyptic number.

20210222210220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20210222210220 is an abundant number, since it is smaller than the sum of its proper divisors (49856351064660).

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

20210222210220 is a wasteful number, since it uses less digits than its factorization.

20210222210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023284 (or 1023279 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20210222210220 its reverse (2201222201202), we get a palindrome (22411444411422).

The spelling of 20210222210220 in words is "twenty trillion, two hundred ten billion, two hundred twenty-two million, two hundred ten thousand, two hundred twenty".