211121202010101 has 16 divisors (see below), whose sum is σ = 286110346361088. Its totient is φ = 138439774756800.

The previous prime is 211121202010087. The next prime is 211121202010157. The reversal of 211121202010101 is 101010202121112.

It is a happy number.

It is not a de Polignac number, because 211121202010101 - 2⁷ = 211121202009973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211121202010171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82390516 + ... + 84914306.

It is an arithmetic number, because the mean of its divisors is an integer number (17881896647568).

Almost surely, 2^{211121202010101} is an apocalyptic number.

It is an amenable number.

211121202010101 is a deficient number, since it is larger than the sum of its proper divisors (74989144350987).

211121202010101 is a wasteful number, since it uses less digits than its factorization.

211121202010101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2980972.

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

Adding to 211121202010101 its reverse (101010202121112), we get a palindrome (312131404131213).

The spelling of 211121202010101 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred two million, ten thousand, one hundred one".