101221012213 has 6 divisors (see below), whose sum is σ = 107525435426. Its totient is φ = 95266834752.

The previous prime is 101221012201. The next prime is 101221012241. The reversal of 101221012213 is 312210122101.

It can be written as a sum of positive squares in 3 ways, for example, as 11542923844 + 89678088369 = 107438^2 + 299463^2 .

It is not a de Polignac number, because 101221012213 - 2¹⁷ = 101220881141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101221012253) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 175122570 + ... + 175123147.

Almost surely, 2^101221012213 is an apocalyptic number.

It is an amenable number.

101221012213 is a deficient number, since it is larger than the sum of its proper divisors (6304423213).

101221012213 is an equidigital number, since it uses as much as digits as its factorization.

101221012213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350245751 (or 350245734 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 101221012213 its reverse (312210122101), we get a palindrome (413431134314).

The spelling of 101221012213 in words is "one hundred one billion, two hundred twenty-one million, twelve thousand, two hundred thirteen".