1210123210 has 16 divisors (see below), whose sum is σ = 2202697800. Its totient is φ = 478610176.

The previous prime is 1210123193. The next prime is 1210123259. The reversal of 1210123210 is 123210121.

1210123210 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 4 ways, for example, as 605110801 + 605012409 = 24599^2 + 24597^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 678955 + ... + 680734.

Almost surely, 2^1210123210 is an apocalyptic number.

1210123210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1210123210 is a deficient number, since it is larger than the sum of its proper divisors (992574590).

1210123210 is a wasteful number, since it uses less digits than its factorization.

1210123210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359785.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1210123210 is about 34786.8252359999. The cubic root of 1210123210 is about 1065.6384043687.

Adding to 1210123210 its reverse (123210121), we get a palindrome (1333333331).

It can be divided in two parts, 1210 and 123210, that multiplied together give a square (149084100 = 12210²).

The spelling of 1210123210 in words is "one billion, two hundred ten million, one hundred twenty-three thousand, two hundred ten".