2001002012192 has 12 divisors (see below), whose sum is σ = 3939472711566. Its totient is φ = 1000501006080.

The previous prime is 2001002012179. The next prime is 2001002012209. The reversal of 2001002012192 is 2912102001002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1992829128976 + 8172883216 = 1411676^2 + 90404^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31265656409 + ... + 31265656472.

Almost surely, 2^{2001002012192} is an apocalyptic number.

It is an amenable number.

2001002012192 is a deficient number, since it is larger than the sum of its proper divisors (1938470699374).

2001002012192 is an equidigital number, since it uses as much as digits as its factorization.

2001002012192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62531312891 (or 62531312883 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 2001002012192 its reverse (2912102001002), we get a palindrome (4913104013194).

The spelling of 2001002012192 in words is "two trillion, one billion, two million, twelve thousand, one hundred ninety-two".