212101011120101 has 4 divisors (see below), whose sum is σ = 213211487618304. Its totient is φ = 210990534621900.

The previous prime is 212101011120043. The next prime is 212101011120143. The reversal of 212101011120101 is 101021110101212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212101011120101 - 2³⁸ = 211826133213157 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 (212101011110101) 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, 555238248815 + ... + 555238249196.

It is an arithmetic number, because the mean of its divisors is an integer number (53302871904576).

Almost surely, 2^{212101011120101} is an apocalyptic number.

It is an amenable number.

212101011120101 is a deficient number, since it is larger than the sum of its proper divisors (1110476498203).

212101011120101 is a wasteful number, since it uses less digits than its factorization.

212101011120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110476498202.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 212101011120101 its reverse (101021110101212), we get a palindrome (313122121221313).

The spelling of 212101011120101 in words is "two hundred twelve trillion, one hundred one billion, eleven million, one hundred twenty thousand, one hundred one".