1211325610 has 32 divisors (see below), whose sum is σ = 2442897792. Its totient is φ = 428575680.

The previous prime is 1211325593. The next prime is 1211325671. The reversal of 1211325610 is 165231121.

It is a happy number.

1211325610 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144742 + ... + 152881.

It is an arithmetic number, because the mean of its divisors is an integer number (76340556).

Almost surely, 2^1211325610 is an apocalyptic number.

1211325610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211325610 is an abundant number, since it is smaller than the sum of its proper divisors (1231572182).

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

1211325610 is a wasteful number, since it uses less digits than its factorization.

1211325610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297678.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1211325610 is about 34804.1033500362. The cubic root of 1211325610 is about 1065.9912333090.

Adding to 1211325610 its reverse (165231121), we get a palindrome (1376556731).

The spelling of 1211325610 in words is "one billion, two hundred eleven million, three hundred twenty-five thousand, six hundred ten".