1231212020230 has 16 divisors (see below), whose sum is σ = 2216246474304. Its totient is φ = 492470399680.

The previous prime is 1231212020219. The next prime is 1231212020327. The reversal of 1231212020230 is 320202121321.

It is a junction number, because it is equal to n+sod(n) for n = 1231212020198 and 1231212020207.

It is a congruent number.

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, 1438687 + ... + 2128906.

It is an arithmetic number, because the mean of its divisors is an integer number (138515404644).

Almost surely, 2^{1231212020230} is an apocalyptic number.

1231212020230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231212020230 is a deficient number, since it is larger than the sum of its proper divisors (985034454074).

1231212020230 is a wasteful number, since it uses less digits than its factorization.

1231212020230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3602111.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1231212020230 its reverse (320202121321), we get a palindrome (1551414141551).

The spelling of 1231212020230 in words is "one trillion, two hundred thirty-one billion, two hundred twelve million, twenty thousand, two hundred thirty".