101221021203 has 16 divisors (see below), whose sum is σ = 137917908480. Its totient is φ = 66004178976.

The previous prime is 101221021201. The next prime is 101221021219. The reversal of 101221021203 is 302120122101.

It is not a de Polignac number, because 101221021203 - 2¹ = 101221021201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101221021201) 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 15 ways as a sum of consecutive naturals, for example, 8793 + ... + 450021.

It is an arithmetic number, because the mean of its divisors is an integer number (8619869280).

Almost surely, 2^101221021203 is an apocalyptic number.

101221021203 is a deficient number, since it is larger than the sum of its proper divisors (36696887277).

101221021203 is a wasteful number, since it uses less digits than its factorization.

101221021203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442906.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 101221021203 its reverse (302120122101), we get a palindrome (403341143304).

The spelling of 101221021203 in words is "one hundred one billion, two hundred twenty-one million, twenty-one thousand, two hundred three".