101213221031 has 12 divisors (see below), whose sum is σ = 110210059080. Its totient is φ = 92905619040.

The previous prime is 101213221009. The next prime is 101213221037. The reversal of 101213221031 is 130122312101.

It is not a de Polignac number, because 101213221031 - 2¹⁰ = 101213220007 is a prime.

It is a super-3 number, since 3×101213221031³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101213221037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1642640 + ... + 1703141.

It is an arithmetic number, because the mean of its divisors is an integer number (9184171590).

Almost surely, 2^101213221031 is an apocalyptic number.

101213221031 is a deficient number, since it is larger than the sum of its proper divisors (8996838049).

101213221031 is a wasteful number, since it uses less digits than its factorization.

101213221031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3345986 (or 3345973 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 101213221031 its reverse (130122312101), we get a palindrome (231335533132).

The spelling of 101213221031 in words is "one hundred one billion, two hundred thirteen million, two hundred twenty-one thousand, thirty-one".