1021222202020 has 12 divisors (see below), whose sum is σ = 2144566624284. Its totient is φ = 408488880800.

The previous prime is 1021222201999. The next prime is 1021222202047. The reversal of 1021222202020 is 202022221201.

1021222202020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 441129758976 + 580092443044 = 664176^2 + 761638^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1021222201985 and 1021222202003.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25530555031 + ... + 25530555070.

It is an arithmetic number, because the mean of its divisors is an integer number (178713885357).

Almost surely, 2^{1021222202020} is an apocalyptic number.

1021222202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021222202020 is an abundant number, since it is smaller than the sum of its proper divisors (1123344422264).

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

1021222202020 is a wasteful number, since it uses less digits than its factorization.

1021222202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51061110110 (or 51061110108 counting only the distinct ones).

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

Adding to 1021222202020 its reverse (202022221201), we get a palindrome (1223244423221).

The spelling of 1021222202020 in words is "one trillion, twenty-one billion, two hundred twenty-two million, two hundred two thousand, twenty".