101212221201 has 128 divisors (see below), whose sum is σ = 173887537152. Its totient is φ = 50948352000.

The previous prime is 101212221181. The next prime is 101212221233. The reversal of 101212221201 is 102122212101.

It is not a de Polignac number, because 101212221201 - 2¹⁵ = 101212188433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101212221281) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 185031210 + ... + 185031756.

It is an arithmetic number, because the mean of its divisors is an integer number (1358496384).

Almost surely, 2^101212221201 is an apocalyptic number.

It is an amenable number.

101212221201 is a deficient number, since it is larger than the sum of its proper divisors (72675315951).

101212221201 is a wasteful number, since it uses less digits than its factorization.

101212221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 101212221201 its reverse (102122212101), we get a palindrome (203334433302).

It can be divided in two parts, 10121 and 2221201, that added together give a palindrome (2231322).

The spelling of 101212221201 in words is "one hundred one billion, two hundred twelve million, two hundred twenty-one thousand, two hundred one".