101212001202111 has 4 divisors (see below), whose sum is σ = 134949334936152. Its totient is φ = 67474667468072.

The previous prime is 101212001202049. The next prime is 101212001202127. The reversal of 101212001202111 is 111202100212101.

It is a happy number.

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 101212001202111 - 2¹⁴ = 101212001185727 is a prime.

It is a super-2 number, since 2×101212001202111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101212001202311) 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, 16868666867016 + ... + 16868666867021.

It is an arithmetic number, because the mean of its divisors is an integer number (33737333734038).

Almost surely, 2^{101212001202111} is an apocalyptic number.

101212001202111 is a deficient number, since it is larger than the sum of its proper divisors (33737333734041).

101212001202111 is an equidigital number, since it uses as much as digits as its factorization.

101212001202111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33737333734040.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 101212001202111 its reverse (111202100212101), we get a palindrome (212414101414212).

The spelling of 101212001202111 in words is "one hundred one trillion, two hundred twelve billion, one million, two hundred two thousand, one hundred eleven".