11220121010 has 64 divisors (see below), whose sum is σ = 23675984640. Its totient is φ = 3748965120.

The previous prime is 11220121001. The next prime is 11220121051. The reversal of 11220121010 is 1012102211.

It is a super-2 number, since 2×11220121010² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11220120982 and 11220121000.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 453377 + ... + 477483.

It is an arithmetic number, because the mean of its divisors is an integer number (369937260).

Almost surely, 2^11220121010 is an apocalyptic number.

11220121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11220121010 is an abundant number, since it is smaller than the sum of its proper divisors (12455863630).

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

11220121010 is a wasteful number, since it uses less digits than its factorization.

11220121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24291.

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

Adding to 11220121010 its reverse (1012102211), we get a palindrome (12232223221).

The spelling of 11220121010 in words is "eleven billion, two hundred twenty million, one hundred twenty-one thousand, ten".