101311221012 has 24 divisors (see below), whose sum is σ = 236405539776. Its totient is φ = 33768594048.

The previous prime is 101311221007. The next prime is 101311221017. The reversal of 101311221012 is 210122113101.

It is an interprime number because it is at equal distance from previous prime (101311221007) and next prime (101311221017).

It is a junction number, because it is equal to n+sod(n) for n = 101311220982 and 101311221000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101311221017) 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 7 ways as a sum of consecutive naturals, for example, 16668 + ... + 450444.

It is an arithmetic number, because the mean of its divisors is an integer number (9850230824).

Almost surely, 2^101311221012 is an apocalyptic number.

101311221012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101311221012 is an abundant number, since it is smaller than the sum of its proper divisors (135094318764).

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

101311221012 is a wasteful number, since it uses less digits than its factorization.

101311221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453247 (or 453245 counting only the distinct ones).

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

Adding to 101311221012 its reverse (210122113101), we get a palindrome (311433334113).

The spelling of 101311221012 in words is "one hundred one billion, three hundred eleven million, two hundred twenty-one thousand, twelve".