11021012101220 has 48 divisors (see below), whose sum is σ = 25387629374016. Its totient is φ = 3985499088000.

The previous prime is 11021012101217. The next prime is 11021012101261. The reversal of 11021012101220 is 2210121012011.

It is a junction number, because it is equal to n+sod(n) for n = 11021012101195 and 11021012101204.

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, 138345566 + ... + 138425205.

It is an arithmetic number, because the mean of its divisors is an integer number (528908945292).

Almost surely, 2^{11021012101220} is an apocalyptic number.

11021012101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11021012101220 is an abundant number, since it is smaller than the sum of its proper divisors (14366617272796).

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

11021012101220 is a wasteful number, since it uses less digits than its factorization.

11021012101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276770972 (or 276770970 counting only the distinct ones).

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

Adding to 11021012101220 its reverse (2210121012011), we get a palindrome (13231133113231).

The spelling of 11021012101220 in words is "eleven trillion, twenty-one billion, twelve million, one hundred one thousand, two hundred twenty".