111021101121220 has 48 divisors (see below), whose sum is σ = 240724540224000. Its totient is φ = 42965295183360.

The previous prime is 111021101121197. The next prime is 111021101121319. The reversal of 111021101121220 is 22121101120111.

It is a super-3 number, since 3×111021101121220³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 111021101121194 and 111021101121203.

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, 19602030 + ... + 24622789.

It is an arithmetic number, because the mean of its divisors is an integer number (5015094588000).

Almost surely, 2^{111021101121220} is an apocalyptic number.

111021101121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111021101121220 is an abundant number, since it is smaller than the sum of its proper divisors (129703439102780).

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

111021101121220 is a wasteful number, since it uses less digits than its factorization.

111021101121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44228908 (or 44228906 counting only the distinct ones).

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

Adding to 111021101121220 its reverse (22121101120111), we get a palindrome (133142202241331).

The spelling of 111021101121220 in words is "one hundred eleven trillion, twenty-one billion, one hundred one million, one hundred twenty-one thousand, two hundred twenty".