101223212312 has 8 divisors (see below), whose sum is σ = 189793523100. Its totient is φ = 50611606152.

The previous prime is 101223212309. The next prime is 101223212339. The reversal of 101223212312 is 213212322101.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×101223212312² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6326450762 + ... + 6326450777.

Almost surely, 2^101223212312 is an apocalyptic number.

It is an amenable number.

101223212312 is a deficient number, since it is larger than the sum of its proper divisors (88570310788).

101223212312 is a wasteful number, since it uses less digits than its factorization.

101223212312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12652901545 (or 12652901541 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 101223212312 its reverse (213212322101), we get a palindrome (314435534413).

The spelling of 101223212312 in words is "one hundred one billion, two hundred twenty-three million, two hundred twelve thousand, three hundred twelve".