11201221010 has 64 divisors (see below), whose sum is σ = 24072781824. Its totient is φ = 3671697600.

The previous prime is 11201220991. The next prime is 11201221013. The reversal of 11201221010 is 1012210211.

It is a super-2 number, since 2×11201221010² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11201220982 and 11201221000.

It is not an unprimeable number, because it can be changed into a prime (11201221013) 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, 149015 + ... + 211205.

It is an arithmetic number, because the mean of its divisors is an integer number (376137216).

Almost surely, 2^11201221010 is an apocalyptic number.

11201221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11201221010 is an abundant number, since it is smaller than the sum of its proper divisors (12871560814).

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

11201221010 is a wasteful number, since it uses less digits than its factorization.

11201221010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62319.

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

Adding to 11201221010 its reverse (1012210211), we get a palindrome (12213431221).

The spelling of 11201221010 in words is "eleven billion, two hundred one million, two hundred twenty-one thousand, ten".