211231130321012 has 12 divisors (see below), whose sum is σ = 369924891003360. Its totient is φ = 105538304320056.

The previous prime is 211231130320999. The next prime is 211231130321021. The reversal of 211231130321012 is 210123031132112.

It is a happy number.

It is a super-2 number, since 2×211231130321012² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19315203962 + ... + 19315214897.

It is an arithmetic number, because the mean of its divisors is an integer number (30827074250280).

Almost surely, 2^{211231130321012} is an apocalyptic number.

It is an amenable number.

211231130321012 is a deficient number, since it is larger than the sum of its proper divisors (158693760682348).

211231130321012 is a wasteful number, since it uses less digits than its factorization.

211231130321012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38630420230 (or 38630420228 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 211231130321012 its reverse (210123031132112), we get a palindrome (421354161453124).

The spelling of 211231130321012 in words is "two hundred eleven trillion, two hundred thirty-one billion, one hundred thirty million, three hundred twenty-one thousand, twelve".