101321213020 has 12 divisors (see below), whose sum is σ = 212774547384. Its totient is φ = 40528485200.

The previous prime is 101321213003. The next prime is 101321213023. The reversal of 101321213020 is 20312123101.

It is a junction number, because it is equal to n+sod(n) for n = 101321212985 and 101321213003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101321213023) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2533030306 + ... + 2533030345.

It is an arithmetic number, because the mean of its divisors is an integer number (17731212282).

Almost surely, 2^101321213020 is an apocalyptic number.

101321213020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101321213020 is an abundant number, since it is smaller than the sum of its proper divisors (111453334364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101321213020 is a wasteful number, since it uses less digits than its factorization.

101321213020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5066060660 (or 5066060658 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 101321213020 its reverse (20312123101), we get a palindrome (121633336121).

The spelling of 101321213020 in words is "one hundred one billion, three hundred twenty-one million, two hundred thirteen thousand, twenty".