101121210111 has 4 divisors (see below), whose sum is σ = 134828280152. Its totient is φ = 67414140072.

The previous prime is 101121210037. The next prime is 101121210277. The reversal of 101121210111 is 111012121101.

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

It is not a de Polignac number, because 101121210111 - 2¹¹ = 101121208063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101121210511) 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, 16853535016 + ... + 16853535021.

It is an arithmetic number, because the mean of its divisors is an integer number (33707070038).

Almost surely, 2^101121210111 is an apocalyptic number.

101121210111 is a deficient number, since it is larger than the sum of its proper divisors (33707070041).

101121210111 is an equidigital number, since it uses as much as digits as its factorization.

101121210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33707070040.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 101121210111 its reverse (111012121101), we get a palindrome (212133331212).

The spelling of 101121210111 in words is "one hundred one billion, one hundred twenty-one million, two hundred ten thousand, one hundred eleven".