100231221312212 has 24 divisors (see below), whose sum is σ = 186602758856640. Its totient is φ = 46944090264960.

The previous prime is 100231221312137. The next prime is 100231221312217. The reversal of 100231221312212 is 212213122132001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100231221312217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3492849512 + ... + 3492878207.

It is an arithmetic number, because the mean of its divisors is an integer number (7775114952360).

Almost surely, 2^{100231221312212} is an apocalyptic number.

It is an amenable number.

100231221312212 is a deficient number, since it is larger than the sum of its proper divisors (86371537544428).

100231221312212 is a wasteful number, since it uses less digits than its factorization.

100231221312212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6985727951 (or 6985727949 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 100231221312212 its reverse (212213122132001), we get a palindrome (312444343444213).

The spelling of 100231221312212 in words is "one hundred trillion, two hundred thirty-one billion, two hundred twenty-one million, three hundred twelve thousand, two hundred twelve".