1213002011 has 8 divisors (see below), whose sum is σ = 1307159280. Its totient is φ = 1118966112.

The previous prime is 1213001989. The next prime is 1213002017. The reversal of 1213002011 is 1102003121.

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

It is a cyclic number.

It is not a de Polignac number, because 1213002011 - 2⁶ = 1213001947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213001983 and 1213002001.

It is not an unprimeable number, because it can be changed into a prime (1213002017) 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, 9020 + ... + 50073.

It is an arithmetic number, because the mean of its divisors is an integer number (163394910).

Almost surely, 2^1213002011 is an apocalyptic number.

1213002011 is a deficient number, since it is larger than the sum of its proper divisors (94157269).

1213002011 is a wasteful number, since it uses less digits than its factorization.

1213002011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60685.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1213002011 is about 34828.1784048491. The cubic root of 1213002011 is about 1066.4827623161.

Adding to 1213002011 its reverse (1102003121), we get a palindrome (2315005132).

The spelling of 1213002011 in words is "one billion, two hundred thirteen million, two thousand, eleven".