210220100111 has 16 divisors (see below), whose sum is σ = 240879249408. Its totient is φ = 179718134400.

The previous prime is 210220100087. The next prime is 210220100137. The reversal of 210220100111 is 111001022012.

It is not a de Polignac number, because 210220100111 - 2¹⁸ = 210219837967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210220100092 and 210220100101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210220100141) 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, 12452006 + ... + 12468876.

It is an arithmetic number, because the mean of its divisors is an integer number (15054953088).

Almost surely, 2^210220100111 is an apocalyptic number.

210220100111 is a deficient number, since it is larger than the sum of its proper divisors (30659149297).

210220100111 is a wasteful number, since it uses less digits than its factorization.

210220100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21422.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 210220100111 its reverse (111001022012), we get a palindrome (321221122123).

The spelling of 210220100111 in words is "two hundred ten billion, two hundred twenty million, one hundred thousand, one hundred eleven".