1200211011020 has 96 divisors (see below), whose sum is σ = 3032397957120. Its totient is φ = 389806214400.

The previous prime is 1200211011007. The next prime is 1200211011029. The reversal of 1200211011020 is 201101120021.

It is a super-2 number, since 2×1200211011020² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1200211010992 and 1200211011010.

It is not an unprimeable number, because it can be changed into a prime (1200211011029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53457437 + ... + 53479883.

It is an arithmetic number, because the mean of its divisors is an integer number (31587478720).

Almost surely, 2^{1200211011020} is an apocalyptic number.

1200211011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200211011020 is an abundant number, since it is smaller than the sum of its proper divisors (1832186946100).

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

1200211011020 is a wasteful number, since it uses less digits than its factorization.

1200211011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42583 (or 42581 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1200211011020 its reverse (201101120021), we get a palindrome (1401312131041).

The spelling of 1200211011020 in words is "one trillion, two hundred billion, two hundred eleven million, eleven thousand, twenty".