1212003552 has 48 divisors (see below), whose sum is σ = 3211270272. Its totient is φ = 400222080.

The previous prime is 1212003511. The next prime is 1212003553. The reversal of 1212003552 is 2553002121.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-3 number, since 3×1212003552³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212003553) 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, 48724 + ... + 69267.

It is an arithmetic number, because the mean of its divisors is an integer number (66901464).

Almost surely, 2^1212003552 is an apocalyptic number.

1212003552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1212003552 is an abundant number, since it is smaller than the sum of its proper divisors (1999266720).

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

1212003552 is a wasteful number, since it uses less digits than its factorization.

1212003552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118111 (or 118103 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1212003552 is about 34813.8413852881. The cubic root of 1212003552 is about 1066.1900638144.

Adding to 1212003552 its reverse (2553002121), we get a palindrome (3765005673).

The spelling of 1212003552 in words is "one billion, two hundred twelve million, three thousand, five hundred fifty-two".