1211022003231 has 12 divisors (see below), whose sum is σ = 1766237054608. Its totient is φ = 799509671424.

The previous prime is 1211022003221. The next prime is 1211022003251. The reversal of 1211022003231 is 1323002201121.

1211022003231 is a `hidden beast` number, since 1 + 211 + 0 + 220 + 0 + 3 + 231 = 666.

It is not a de Polignac number, because 1211022003231 - 2²¹ = 1211019906079 is a prime.

It is a super-2 number, since 2×1211022003231² (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 (1211022003221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 653193250 + ... + 653195103.

Almost surely, 2^{1211022003231} is an apocalyptic number.

1211022003231 is a deficient number, since it is larger than the sum of its proper divisors (555215051377).

1211022003231 is a wasteful number, since it uses less digits than its factorization.

1211022003231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306388462 (or 1306388459 counting only the distinct ones).

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

Adding to 1211022003231 its reverse (1323002201121), we get a palindrome (2534024204352).

The spelling of 1211022003231 in words is "one trillion, two hundred eleven billion, twenty-two million, three thousand, two hundred thirty-one".