11211021220210 has 128 divisors (see below), whose sum is σ = 23555806940160. Its totient is φ = 3762660335616.

The previous prime is 11211021220207. The next prime is 11211021220219. The reversal of 11211021220210 is 1202212011211.

It is not an unprimeable number, because it can be changed into a prime (11211021220219) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 269844699 + ... + 269886241.

It is an arithmetic number, because the mean of its divisors is an integer number (184029741720).

Almost surely, 2^{11211021220210} is an apocalyptic number.

11211021220210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11211021220210 is an abundant number, since it is smaller than the sum of its proper divisors (12344785719950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11211021220210 is a wasteful number, since it uses less digits than its factorization.

11211021220210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42092.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11211021220210 its reverse (1202212011211), we get a palindrome (12413233231421).

The spelling of 11211021220210 in words is "eleven trillion, two hundred eleven billion, twenty-one million, two hundred twenty thousand, two hundred ten".