1222022220020 has 36 divisors (see below), whose sum is σ = 2985225711300. Its totient is φ = 418979046528.

The previous prime is 1222022220011. The next prime is 1222022220043. The reversal of 1222022220020 is 200222202221.

It can be written as a sum of positive squares in 2 ways, for example, as 768592369636 + 453429850384 = 876694^2 + 673372^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 623479745 + ... + 623481704.

It is an arithmetic number, because the mean of its divisors is an integer number (82922936425).

Almost surely, 2^{1222022220020} is an apocalyptic number.

1222022220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222022220020 is an abundant number, since it is smaller than the sum of its proper divisors (1763203491280).

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

1222022220020 is a wasteful number, since it uses less digits than its factorization.

1222022220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246961472 (or 1246961463 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 1222022220020 its reverse (200222202221), we get a palindrome (1422244422241).

The spelling of 1222022220020 in words is "one trillion, two hundred twenty-two billion, twenty-two million, two hundred twenty thousand, twenty".