1121021340 has 48 divisors (see below), whose sum is σ = 3152725632. Its totient is φ = 297618496.

The previous prime is 1121021333. The next prime is 1121021347. The reversal of 1121021340 is 431201211.

It is an interprime number because it is at equal distance from previous prime (1121021333) and next prime (1121021347).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121021347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27534 + ... + 54773.

It is an arithmetic number, because the mean of its divisors is an integer number (65681784).

Almost surely, 2^1121021340 is an apocalyptic number.

1121021340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121021340 is an abundant number, since it is smaller than the sum of its proper divisors (2031704292).

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

1121021340 is a wasteful number, since it uses less digits than its factorization.

1121021340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82546 (or 82544 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1121021340 is about 33481.6567690430. The cubic root of 1121021340 is about 1038.8143971974.

Adding to 1121021340 its reverse (431201211), we get a palindrome (1552222551).

The spelling of 1121021340 in words is "one billion, one hundred twenty-one million, twenty-one thousand, three hundred forty".