211121012100101 has 4 divisors (see below), whose sum is σ = 212639868302400. Its totient is φ = 209602155897804.

The previous prime is 211121012100049. The next prime is 211121012100107. The reversal of 211121012100101 is 101001210121112.

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 a de Polignac number, because none of the positive numbers 2^k-211121012100101 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 (211121012100107) 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, 759428100941 + ... + 759428101218.

It is an arithmetic number, because the mean of its divisors is an integer number (53159967075600).

Almost surely, 2^{211121012100101} is an apocalyptic number.

It is an amenable number.

211121012100101 is a deficient number, since it is larger than the sum of its proper divisors (1518856202299).

211121012100101 is a wasteful number, since it uses less digits than its factorization.

211121012100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518856202298.

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

Adding to 211121012100101 its reverse (101001210121112), we get a palindrome (312122222221213).

The spelling of 211121012100101 in words is "two hundred eleven trillion, one hundred twenty-one billion, twelve million, one hundred thousand, one hundred one".