1213050000 has 120 divisors (see below), whose sum is σ = 3917374272. Its totient is φ = 323440000.

The previous prime is 1213049993. The next prime is 1213050017. The reversal of 1213050000 is 503121.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145957 + ... + 154043.

Almost surely, 2^1213050000 is an apocalyptic number.

1213050000 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 1213050000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1958687136).

1213050000 is an abundant number, since it is smaller than the sum of its proper divisors (2704324272).

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

1213050000 is an frugal number, since it uses more digits than its factorization.

1213050000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8123 (or 8097 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 1213050000 is about 34828.8673373109. The cubic root of 1213050000 is about 1066.4968262571.

Adding to 1213050000 its reverse (503121), we get a palindrome (1213553121).

The spelling of 1213050000 in words is "one billion, two hundred thirteen million, fifty thousand".