1021022202220 has 12 divisors (see below), whose sum is σ = 2144146624704. Its totient is φ = 408408880880.

The previous prime is 1021022202199. The next prime is 1021022202227. The reversal of 1021022202220 is 222022201201.

It is a junction number, because it is equal to n+sod(n) for n = 1021022202194 and 1021022202203.

It is not an unprimeable number, because it can be changed into a prime (1021022202227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25525555036 + ... + 25525555075.

It is an arithmetic number, because the mean of its divisors is an integer number (178678885392).

Almost surely, 2^{1021022202220} is an apocalyptic number.

1021022202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021022202220 is an abundant number, since it is smaller than the sum of its proper divisors (1123124422484).

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

1021022202220 is a wasteful number, since it uses less digits than its factorization.

1021022202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51051110120 (or 51051110118 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 1021022202220 its reverse (222022201201), we get a palindrome (1243044403421).

The spelling of 1021022202220 in words is "one trillion, twenty-one billion, twenty-two million, two hundred two thousand, two hundred twenty".