210100221201111 has 32 divisors (see below), whose sum is σ = 282684777431040. Its totient is φ = 138797788166400.

The previous prime is 210100221201107. The next prime is 210100221201113. The reversal of 210100221201111 is 111102122001012.

It is a happy number.

It is not a de Polignac number, because 210100221201111 - 2² = 210100221201107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210100221201113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 176950641 + ... + 178134021.

It is an arithmetic number, because the mean of its divisors is an integer number (8833899294720).

Almost surely, 2^{210100221201111} is an apocalyptic number.

210100221201111 is a deficient number, since it is larger than the sum of its proper divisors (72584556229929).

210100221201111 is a wasteful number, since it uses less digits than its factorization.

210100221201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184767.

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

Adding to 210100221201111 its reverse (111102122001012), we get a palindrome (321202343202123).

The spelling of 210100221201111 in words is "two hundred ten trillion, one hundred billion, two hundred twenty-one million, two hundred one thousand, one hundred eleven".