101021221012 has 12 divisors (see below), whose sum is σ = 176982057280. Its totient is φ = 50454918936.

The previous prime is 101021221001. The next prime is 101021221013. The reversal of 101021221012 is 210122120101.

It is a junction number, because it is equal to n+sod(n) for n = 101021220983 and 101021221001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101021221013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13918812 + ... + 13926067.

Almost surely, 2^101021221012 is an apocalyptic number.

It is an amenable number.

101021221012 is a deficient number, since it is larger than the sum of its proper divisors (75960836268).

101021221012 is a wasteful number, since it uses less digits than its factorization.

101021221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27845790 (or 27845788 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 101021221012 its reverse (210122120101), we get a palindrome (311143341113).

The spelling of 101021221012 in words is "one hundred one billion, twenty-one million, two hundred twenty-one thousand, twelve".