1231223012010 has 48 divisors (see below), whose sum is σ = 3201391609416. Its totient is φ = 328304415744.

The previous prime is 1231223012009. The next prime is 1231223012011. The reversal of 1231223012010 is 102103221321.

1231223012010 is a `hidden beast` number, since 1 + 2 + 312 + 230 + 120 + 1 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1231223012009) and next prime (1231223012011).

It can be written as a sum of positive squares in 4 ways, for example, as 1185208900929 + 46014111081 = 1088673^2 + 214509^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1231223012011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 939102 + ... + 1828758.

Almost surely, 2^{1231223012010} is an apocalyptic number.

1231223012010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231223012010 is an abundant number, since it is smaller than the sum of its proper divisors (1970168597406).

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

1231223012010 is a wasteful number, since it uses less digits than its factorization.

1231223012010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905047 (or 905044 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1231223012010 its reverse (102103221321), we get a palindrome (1333326233331).

The spelling of 1231223012010 in words is "one trillion, two hundred thirty-one billion, two hundred twenty-three million, twelve thousand, ten".