11211020210 has 16 divisors (see below), whose sum is σ = 21732131736. Its totient is φ = 4139453568.

The previous prime is 11211020173. The next prime is 11211020257. The reversal of 11211020210 is 1202011211.

It can be written as a sum of positive squares in 4 ways, for example, as 5686517281 + 5524502929 = 75409^2 + 74327^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11211020191 and 11211020200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43119179 + ... + 43119438.

Almost surely, 2^11211020210 is an apocalyptic number.

11211020210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11211020210 is a deficient number, since it is larger than the sum of its proper divisors (10521111526).

11211020210 is a wasteful number, since it uses less digits than its factorization.

11211020210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86238637.

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

Adding to 11211020210 its reverse (1202011211), we get a palindrome (12413031421).

The spelling of 11211020210 in words is "eleven billion, two hundred eleven million, twenty thousand, two hundred ten".