11211012100220 has 48 divisors (see below), whose sum is σ = 24311814605568. Its totient is φ = 4338097774080.

The previous prime is 11211012100217. The next prime is 11211012100243. The reversal of 11211012100220 is 2200121011211.

It is a super-2 number, since 2×11211012100220² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11211012100195 and 11211012100204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1801319 + ... + 5066238.

It is an arithmetic number, because the mean of its divisors is an integer number (506496137616).

Almost surely, 2^{11211012100220} is an apocalyptic number.

11211012100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211012100220 is an abundant number, since it is smaller than the sum of its proper divisors (13100802505348).

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

11211012100220 is a wasteful number, since it uses less digits than its factorization.

11211012100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6870230 (or 6870228 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11211012100220 its reverse (2200121011211), we get a palindrome (13411133111431).

The spelling of 11211012100220 in words is "eleven trillion, two hundred eleven billion, twelve million, one hundred thousand, two hundred twenty".