1000122220020 has 192 divisors, whose sum is σ = 3675090585600. Its totient is φ = 196879818240.

The previous prime is 1000122220003. The next prime is 1000122220049. The reversal of 1000122220020 is 200222210001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1000122219978 and 1000122220005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5608975 + ... + 5784534.

It is an arithmetic number, because the mean of its divisors is an integer number (19141096800).

Almost surely, 2^{1000122220020} is an apocalyptic number.

1000122220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000122220020 is an abundant number, since it is smaller than the sum of its proper divisors (2674968365580).

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

1000122220020 is a wasteful number, since it uses less digits than its factorization.

1000122220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11393558 (or 11393556 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 1000122220020 its reverse (200222210001), we get a palindrome (1200344430021).

The spelling of 1000122220020 in words is "one trillion, one hundred twenty-two million, two hundred twenty thousand, twenty".