1191213010 has 64 divisors (see below), whose sum is σ = 2429263872. Its totient is φ = 417263616.

The previous prime is 1191212989. The next prime is 1191213017. The reversal of 1191213010 is 103121911.

It is not an unprimeable number, because it can be changed into a prime (1191213017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 378162 + ... + 381298.

It is an arithmetic number, because the mean of its divisors is an integer number (37957248).

Almost surely, 2^1191213010 is an apocalyptic number.

1191213010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1191213010 is an abundant number, since it is smaller than the sum of its proper divisors (1238050862).

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

1191213010 is a wasteful number, since it uses less digits than its factorization.

1191213010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3307.

The product of its (nonzero) digits is 54, while the sum is 19.

The square root of 1191213010 is about 34513.9538447857. The cubic root of 1191213010 is about 1060.0584428439.

Adding to 1191213010 its reverse (103121911), we get a palindrome (1294334921).

The spelling of 1191213010 in words is "one billion, one hundred ninety-one million, two hundred thirteen thousand, ten".