2110121020 has 48 divisors (see below), whose sum is σ = 5227665408. Its totient is φ = 700130880.

The previous prime is 2110121011. The next prime is 2110121021. The reversal of 2110121020 is 201210112.

It is a super-2 number, since 2×2110121020² = 8905221438091680800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 2110120988 and 2110121006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110121021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238762 + ... + 247441.

It is an arithmetic number, because the mean of its divisors is an integer number (108909696).

Almost surely, 2^2110121020 is an apocalyptic number.

2110121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2110121020 is an abundant number, since it is smaller than the sum of its proper divisors (3117544388).

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

2110121020 is a wasteful number, since it uses less digits than its factorization.

2110121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486250 (or 486248 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 2110121020 is about 45936.0535962766. The cubic root of 2110121020 is about 1282.6331334471.

Adding to 2110121020 its reverse (201210112), we get a palindrome (2311331132).

The spelling of 2110121020 in words is "two billion, one hundred ten million, one hundred twenty-one thousand, twenty".