2113121010 has 192 divisors, whose sum is σ = 6861931776. Its totient is φ = 405250560.

The previous prime is 2113120963. The next prime is 2113121027. The reversal of 2113121010 is 101213112.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 327132 + ... + 333528.

It is an arithmetic number, because the mean of its divisors is an integer number (35739228).

Almost surely, 2^2113121010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2113121010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3430965888).

2113121010 is an abundant number, since it is smaller than the sum of its proper divisors (4748810766).

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

2113121010 is a wasteful number, since it uses less digits than its factorization.

2113121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6449 (or 6438 counting only the distinct ones).

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

The square root of 2113121010 is about 45968.6959788942. The cubic root of 2113121010 is about 1283.2406917252.

Adding to 2113121010 its reverse (101213112), we get a palindrome (2214334122).

The spelling of 2113121010 in words is "two billion, one hundred thirteen million, one hundred twenty-one thousand, ten".