101210131221 has 8 divisors (see below), whose sum is σ = 134952006144. Its totient is φ = 67470838560.

The previous prime is 101210131181. The next prime is 101210131241. The reversal of 101210131221 is 122131012101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 101210131221 - 2⁷ = 101210131093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101210131221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101210131241) 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, 552181 + ... + 712266.

It is an arithmetic number, because the mean of its divisors is an integer number (16869000768).

Almost surely, 2^101210131221 is an apocalyptic number.

It is an amenable number.

101210131221 is a deficient number, since it is larger than the sum of its proper divisors (33741874923).

101210131221 is a wasteful number, since it uses less digits than its factorization.

101210131221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291131.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 101210131221 its reverse (122131012101), we get a palindrome (223341143322).

The spelling of 101210131221 in words is "one hundred one billion, two hundred ten million, one hundred thirty-one thousand, two hundred twenty-one".