1210012121231 has 8 divisors (see below), whose sum is σ = 1212331954224. Its totient is φ = 1207692682560.

The previous prime is 1210012121207. The next prime is 1210012121243. The reversal of 1210012121231 is 1321212100121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210012121231 is a prime.

It is a super-2 number, since 2×1210012121231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210012121281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6461291 + ... + 6645923.

It is an arithmetic number, because the mean of its divisors is an integer number (151541494278).

Almost surely, 2^{1210012121231} is an apocalyptic number.

1210012121231 is a deficient number, since it is larger than the sum of its proper divisors (2319832993).

1210012121231 is a wasteful number, since it uses less digits than its factorization.

1210012121231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197161.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1210012121231 its reverse (1321212100121), we get a palindrome (2531224221352).

The spelling of 1210012121231 in words is "one trillion, two hundred ten billion, twelve million, one hundred twenty-one thousand, two hundred thirty-one".