2102200724 has 12 divisors (see below), whose sum is σ = 3961839924. Its totient is φ = 970246464.

The previous prime is 2102200721. The next prime is 2102200787. The reversal of 2102200724 is 4270022012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 563207824 + 1538992900 = 23732^2 + 39230^2 .

It is a super-2 number, since 2×2102200724² = 8838495767972248352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2102200696 and 2102200705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102200721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20213417 + ... + 20213520.

It is an arithmetic number, because the mean of its divisors is an integer number (330153327).

Almost surely, 2^2102200724 is an apocalyptic number.

It is an amenable number.

2102200724 is a deficient number, since it is larger than the sum of its proper divisors (1859639200).

2102200724 is a wasteful number, since it uses less digits than its factorization.

2102200724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40426954 (or 40426952 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 2102200724 is about 45849.7625293741. The cubic root of 2102200724 is about 1281.0263423553.

Adding to 2102200724 its reverse (4270022012), we get a palindrome (6372222736).

The spelling of 2102200724 in words is "two billion, one hundred two million, two hundred thousand, seven hundred twenty-four".