211112033100221 has 16 divisors (see below), whose sum is σ = 233366181124608. Its totient is φ = 189373944913200.

The previous prime is 211112033100107. The next prime is 211112033100239. The reversal of 211112033100221 is 122001330211112.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211112033100221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211112033100193 and 211112033100202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211112033100721) 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, 141817481 + ... + 143298366.

It is an arithmetic number, because the mean of its divisors is an integer number (14585386320288).

Almost surely, 2^{211112033100221} is an apocalyptic number.

It is an amenable number.

211112033100221 is a deficient number, since it is larger than the sum of its proper divisors (22254148024387).

211112033100221 is a wasteful number, since it uses less digits than its factorization.

211112033100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285116752.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 211112033100221 its reverse (122001330211112), we get a palindrome (333113363311333).

The spelling of 211112033100221 in words is "two hundred eleven trillion, one hundred twelve billion, thirty-three million, one hundred thousand, two hundred twenty-one".