202120211021022 has 48 divisors (see below), whose sum is σ = 501808690880640. Its totient is φ = 57596260646736.

The previous prime is 202120211020967. The next prime is 202120211021023. The reversal of 202120211021022 is 220120112021202.

It is a happy number.

202120211021022 is a `hidden beast` number, since 202 + 1 + 20 + 211 + 0 + 210 + 22 = 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 = 202120211020986 and 202120211021004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202120211021023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2116216968 + ... + 2116312475.

It is an arithmetic number, because the mean of its divisors is an integer number (10454347726680).

Almost surely, 2^{202120211021022} is an apocalyptic number.

202120211021022 is an abundant number, since it is smaller than the sum of its proper divisors (299688479859618).

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

202120211021022 is a wasteful number, since it uses less digits than its factorization.

202120211021022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4232529837 (or 4232529834 counting only the distinct ones).

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

Adding to 202120211021022 its reverse (220120112021202), we get a palindrome (422240323042224).

The spelling of 202120211021022 in words is "two hundred two trillion, one hundred twenty billion, two hundred eleven million, twenty-one thousand, twenty-two".