1222001220020 has 48 divisors (see below), whose sum is σ = 2972978335488. Its totient is φ = 413232503040.

The previous prime is 1222001220017. The next prime is 1222001220047. The reversal of 1222001220020 is 200221002221.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1222001219977 and 1222001220004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59774576 + ... + 59795015.

It is an arithmetic number, because the mean of its divisors is an integer number (61937048656).

Almost surely, 2^{1222001220020} is an apocalyptic number.

1222001220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222001220020 is an abundant number, since it is smaller than the sum of its proper divisors (1750977115468).

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

1222001220020 is a wasteful number, since it uses less digits than its factorization.

1222001220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119569680 (or 119569678 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1222001220020 its reverse (200221002221), we get a palindrome (1422222222241).

The spelling of 1222001220020 in words is "one trillion, two hundred twenty-two billion, one million, two hundred twenty thousand, twenty".