10121120220 has 48 divisors (see below), whose sum is σ = 28562300928. Its totient is φ = 2677711680.

The previous prime is 10121120189. The next prime is 10121120237. The reversal of 10121120220 is 2202112101.

It is a super-3 number, since 3×10121120220³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 10121120196 and 10121120205.

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, 656496 + ... + 671735.

It is an arithmetic number, because the mean of its divisors is an integer number (595047936).

Almost surely, 2^10121120220 is an apocalyptic number.

10121120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10121120220 is an abundant number, since it is smaller than the sum of its proper divisors (18441180708).

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

10121120220 is a wasteful number, since it uses less digits than its factorization.

10121120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328370 (or 1328368 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10121120220 its reverse (2202112101), we get a palindrome (12323232321).

The spelling of 10121120220 in words is "ten billion, one hundred twenty-one million, one hundred twenty thousand, two hundred twenty".