1011200020120 has 32 divisors (see below), whose sum is σ = 2275316971200. Its totient is φ = 404459221248.

The previous prime is 1011200020111. The next prime is 1011200020121. The reversal of 1011200020120 is 210200021101.

It is a super-3 number, since 3×1011200020120³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1011200020097 and 1011200020106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011200020121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150652 + ... + 1430068.

It is an arithmetic number, because the mean of its divisors is an integer number (71103655350).

Almost surely, 2^{1011200020120} is an apocalyptic number.

1011200020120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011200020120 is an abundant number, since it is smaller than the sum of its proper divisors (1264116951080).

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

1011200020120 is a wasteful number, since it uses less digits than its factorization.

1011200020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299187 (or 1299183 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1011200020120 its reverse (210200021101), we get a palindrome (1221400041221).

The spelling of 1011200020120 in words is "one trillion, eleven billion, two hundred million, twenty thousand, one hundred twenty".