1231211230210 has 128 divisors (see below), whose sum is σ = 2449087280640. Its totient is φ = 442844153856.

The previous prime is 1231211230163. The next prime is 1231211230213. The reversal of 1231211230210 is 120321121321.

It is not an unprimeable number, because it can be changed into a prime (1231211230213) 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, 704756557 + ... + 704758303.

It is an arithmetic number, because the mean of its divisors is an integer number (19133494380).

Almost surely, 2^{1231211230210} is an apocalyptic number.

1231211230210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231211230210 is a deficient number, since it is larger than the sum of its proper divisors (1217876050430).

1231211230210 is a wasteful number, since it uses less digits than its factorization.

1231211230210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1231211230210 its reverse (120321121321), we get a palindrome (1351532351531).

The spelling of 1231211230210 in words is "one trillion, two hundred thirty-one billion, two hundred eleven million, two hundred thirty thousand, two hundred ten".