101212220203 has 4 divisors (see below), whose sum is σ = 101289897808. Its totient is φ = 101134542600.

The previous prime is 101212220201. The next prime is 101212220243. The reversal of 101212220203 is 302022212101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302022212101 = 193619 ⋅1559879.

It is a cyclic number.

It is not a de Polignac number, because 101212220203 - 2¹ = 101212220201 is a prime.

It is a super-2 number, since 2×101212220203² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101212220201) 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, 38836848 + ... + 38839453.

It is an arithmetic number, because the mean of its divisors is an integer number (25322474452).

Almost surely, 2^101212220203 is an apocalyptic number.

101212220203 is a deficient number, since it is larger than the sum of its proper divisors (77677605).

101212220203 is an equidigital number, since it uses as much as digits as its factorization.

101212220203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77677604.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 101212220203 its reverse (302022212101), we get a palindrome (403234432304).

The spelling of 101212220203 in words is "one hundred one billion, two hundred twelve million, two hundred twenty thousand, two hundred three".