101220001211 has 4 divisors (see below), whose sum is σ = 115680001392. Its totient is φ = 86760001032.

The previous prime is 101220001151. The next prime is 101220001241. The reversal of 101220001211 is 112100022101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101220001211 - 2⁶ = 101220001147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101220001192 and 101220001201.

It is not an unprimeable number, because it can be changed into a prime (101220001241) 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, 7230000080 + ... + 7230000093.

It is an arithmetic number, because the mean of its divisors is an integer number (28920000348).

Almost surely, 2^101220001211 is an apocalyptic number.

101220001211 is a deficient number, since it is larger than the sum of its proper divisors (14460000181).

101220001211 is an equidigital number, since it uses as much as digits as its factorization.

101220001211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14460000180.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 101220001211 its reverse (112100022101), we get a palindrome (213320023312).

The spelling of 101220001211 in words is "one hundred one billion, two hundred twenty million, one thousand, two hundred eleven".