1011201222120 has 64 divisors (see below), whose sum is σ = 3115592968320. Its totient is φ = 262365721344.

The previous prime is 1011201222089. The next prime is 1011201222131. The reversal of 1011201222120 is 212221021101.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1011201222120.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113869572 + ... + 113878451.

It is an arithmetic number, because the mean of its divisors is an integer number (48681140130).

Almost surely, 2^{1011201222120} is an apocalyptic number.

1011201222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011201222120 is an abundant number, since it is smaller than the sum of its proper divisors (2104391746200).

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

1011201222120 is a wasteful number, since it uses less digits than its factorization.

1011201222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227748074 (or 227748070 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1011201222120 its reverse (212221021101), we get a palindrome (1223422243221).

It can be divided in two parts, 1011201 and 222120, that added together give a palindrome (1233321).

The spelling of 1011201222120 in words is "one trillion, eleven billion, two hundred one million, two hundred twenty-two thousand, one hundred twenty".