1201012200020 has 48 divisors (see below), whose sum is σ = 2645419633920. Its totient is φ = 457136756736.

The previous prime is 1201012200013. The next prime is 1201012200061. The reversal of 1201012200020 is 200022101021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1201012199974 and 1201012200010.

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, 6675200 + ... + 6852759.

It is an arithmetic number, because the mean of its divisors is an integer number (55112909040).

Almost surely, 2^{1201012200020} is an apocalyptic number.

1201012200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201012200020 is an abundant number, since it is smaller than the sum of its proper divisors (1444407433900).

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

1201012200020 is a wasteful number, since it uses less digits than its factorization.

1201012200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13528184 (or 13528182 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1201012200020 its reverse (200022101021), we get a palindrome (1401034301041).

The spelling of 1201012200020 in words is "one trillion, two hundred one billion, twelve million, two hundred thousand, twenty".