101243531421212 has 24 divisors (see below), whose sum is σ = 177355025780016. Its totient is φ = 50570692115328.

The previous prime is 101243531421199. The next prime is 101243531421257. The reversal of 101243531421212 is 212124135342101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12930728 + ... + 19227344.

It is an arithmetic number, because the mean of its divisors is an integer number (7389792740834).

Almost surely, 2^{101243531421212} is an apocalyptic number.

It is an amenable number.

101243531421212 is a deficient number, since it is larger than the sum of its proper divisors (76111494358804).

101243531421212 is a wasteful number, since it uses less digits than its factorization.

101243531421212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6300677 (or 6300675 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

Adding to 101243531421212 its reverse (212124135342101), we get a palindrome (313367666763313).

The spelling of 101243531421212 in words is "one hundred one trillion, two hundred forty-three billion, five hundred thirty-one million, four hundred twenty-one thousand, two hundred twelve".