1200212553 has 8 divisors (see below), whose sum is σ = 1600458688. Its totient is φ = 800054064.

The previous prime is 1200212551. The next prime is 1200212561. The reversal of 1200212553 is 3552120021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1200212553 - 2¹ = 1200212551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200212551) 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, 23475 + ... + 54327.

It is an arithmetic number, because the mean of its divisors is an integer number (200057336).

Almost surely, 2^1200212553 is an apocalyptic number.

It is an amenable number.

1200212553 is a deficient number, since it is larger than the sum of its proper divisors (400246135).

1200212553 is a wasteful number, since it uses less digits than its factorization.

1200212553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43823.

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

The square root of 1200212553 is about 34644.0839538297. The cubic root of 1200212553 is about 1062.7213074971.

Adding to 1200212553 its reverse (3552120021), we get a palindrome (4752332574).

The spelling of 1200212553 in words is "one billion, two hundred million, two hundred twelve thousand, five hundred fifty-three".