2113221012 has 48 divisors (see below), whose sum is σ = 5647689600. Its totient is φ = 602445312.

The previous prime is 2113220971. The next prime is 2113221013. The reversal of 2113221012 is 2101223112.

It is a junction number, because it is equal to n+sod(n) for n = 2113220982 and 2113221000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113221013) 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, 10864 + ... + 65912.

It is an arithmetic number, because the mean of its divisors is an integer number (117660200).

Almost surely, 2^2113221012 is an apocalyptic number.

It is an amenable number.

2113221012 is an abundant number, since it is smaller than the sum of its proper divisors (3534468588).

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

2113221012 is a wasteful number, since it uses less digits than its factorization.

2113221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55520 (or 55518 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2113221012 is about 45969.7836845030. The cubic root of 2113221012 is about 1283.2609342339.

Adding to 2113221012 its reverse (2101223112), we get a palindrome (4214444124).

It can be divided in two parts, 211 and 3221012, that added together give a palindrome (3221223).

The spelling of 2113221012 in words is "two billion, one hundred thirteen million, two hundred twenty-one thousand, twelve".