1011343421220 has 48 divisors (see below), whose sum is σ = 3089194452288. Its totient is φ = 245174162560.

The previous prime is 1011343421197. The next prime is 1011343421227. The reversal of 1011343421220 is 221243431101.

It is a super-3 number, since 3×1011343421220³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1011343421227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 766168599 + ... + 766169918.

It is an arithmetic number, because the mean of its divisors is an integer number (64358217756).

Almost surely, 2^{1011343421220} is an apocalyptic number.

1011343421220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011343421220 is an abundant number, since it is smaller than the sum of its proper divisors (2077851031068).

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

1011343421220 is a wasteful number, since it uses less digits than its factorization.

1011343421220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532338540 (or 1532338538 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 1011343421220 its reverse (221243431101), we get a palindrome (1232586852321).

The spelling of 1011343421220 in words is "one trillion, eleven billion, three hundred forty-three million, four hundred twenty-one thousand, two hundred twenty".