101023121211 has 4 divisors (see below), whose sum is σ = 134697494952. Its totient is φ = 67348747472.

The previous prime is 101023121179. The next prime is 101023121233. The reversal of 101023121211 is 112121320101.

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 101023121211 - 2⁵ = 101023121179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101023121281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16837186866 + ... + 16837186871.

It is an arithmetic number, because the mean of its divisors is an integer number (33674373738).

Almost surely, 2^101023121211 is an apocalyptic number.

101023121211 is a deficient number, since it is larger than the sum of its proper divisors (33674373741).

101023121211 is an equidigital number, since it uses as much as digits as its factorization.

101023121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33674373740.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 101023121211 its reverse (112121320101), we get a palindrome (213144441312).

It can be divided in two parts, 10102 and 3121211, that added together give a palindrome (3131313).

The spelling of 101023121211 in words is "one hundred one billion, twenty-three million, one hundred twenty-one thousand, two hundred eleven".