2123201072 has 20 divisors (see below), whose sum is σ = 4214037576. Its totient is φ = 1035707520.

The previous prime is 2123201071. The next prime is 2123201137. The reversal of 2123201072 is 2701023212.

It is not an unprimeable number, because it can be changed into a prime (2123201071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1617638 + ... + 1618949.

Almost surely, 2^2123201072 is an apocalyptic number.

It is an amenable number.

2123201072 is a deficient number, since it is larger than the sum of its proper divisors (2090836504).

2123201072 is a wasteful number, since it uses less digits than its factorization.

2123201072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3236636 (or 3236630 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 2123201072 is about 46078.2060414682. The cubic root of 2123201072 is about 1285.2779046371.

Adding to 2123201072 its reverse (2701023212), we get a palindrome (4824224284).

The spelling of 2123201072 in words is "two billion, one hundred twenty-three million, two hundred one thousand, seventy-two".