202022211121020 has 144 divisors (see below), whose sum is σ = 618816569978880. Its totient is φ = 53344192664448.

The previous prime is 202022211121007. The next prime is 202022211121021. The reversal of 202022211121020 is 20121112220202.

It is a happy number.

202022211121020 is a `hidden beast` number, since 2 + 0 + 202 + 221 + 11 + 210 + 20 = 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 = 202022211120984 and 202022211121002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202022211121021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38826861 + ... + 43721499.

It is an arithmetic number, because the mean of its divisors is an integer number (4297337291520).

Almost surely, 2^{202022211121020} is an apocalyptic number.

202022211121020 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 202022211121020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309408284989440).

202022211121020 is an abundant number, since it is smaller than the sum of its proper divisors (416794358857860).

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

202022211121020 is a wasteful number, since it uses less digits than its factorization.

202022211121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4896904 (or 4896899 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 202022211121020 its reverse (20121112220202), we get a palindrome (222143323341222).

The spelling of 202022211121020 in words is "two hundred two trillion, twenty-two billion, two hundred eleven million, one hundred twenty-one thousand, twenty".