1212001140 has 96 divisors (see below), whose sum is σ = 3886848000. Its totient is φ = 276425856.

The previous prime is 1212001121. The next prime is 1212001157. The reversal of 1212001140 is 411002121.

It is a happy number.

1212001140 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1212001140² = 2937893526722599200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 206689 + ... + 212471.

It is an arithmetic number, because the mean of its divisors is an integer number (40488000).

Almost surely, 2^1212001140 is an apocalyptic number.

1212001140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212001140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1943424000).

1212001140 is an abundant number, since it is smaller than the sum of its proper divisors (2674846860).

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

1212001140 is a wasteful number, since it uses less digits than its factorization.

1212001140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6301 (or 6299 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1212001140 is about 34813.8067438768. The cubic root of 1212001140 is about 1066.1893565414.

Adding to 1212001140 its reverse (411002121), we get a palindrome (1623003261).

The spelling of 1212001140 in words is "one billion, two hundred twelve million, one thousand, one hundred forty".