1210231011 has 64 divisors (see below), whose sum is σ = 1901882880. Its totient is φ = 676823040.

The previous prime is 1210230971. The next prime is 1210231013. The reversal of 1210231011 is 1101320121.

It is not a de Polignac number, because 1210231011 - 2¹⁸ = 1209968867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1210231013) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6270531 + ... + 6270723.

It is an arithmetic number, because the mean of its divisors is an integer number (29716920).

Almost surely, 2^1210231011 is an apocalyptic number.

1210231011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1210231011 is a deficient number, since it is larger than the sum of its proper divisors (691651869).

1210231011 is a wasteful number, since it uses less digits than its factorization.

1210231011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436.

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

The square root of 1210231011 is about 34788.3746530360. The cubic root of 1210231011 is about 1065.6700467319.

Adding to 1210231011 its reverse (1101320121), we get a palindrome (2311551132).

It can be divided in two parts, 1210 and 231011, that added together give a triangular number (232221 = T₆₈₁).

The spelling of 1210231011 in words is "one billion, two hundred ten million, two hundred thirty-one thousand, eleven".