2102012001 has 12 divisors (see below), whose sum is σ = 3037547812. Its totient is φ = 1400737536.

The previous prime is 2102011981. The next prime is 2102012027. The reversal of 2102012001 is 1002102012.

It can be written as a sum of positive squares in 2 ways, for example, as 585688401 + 1516323600 = 24201^2 + 38940^2 .

It is not a de Polignac number, because 2102012001 - 2²³ = 2093623393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102012041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27736 + ... + 70521.

Almost surely, 2^2102012001 is an apocalyptic number.

It is an amenable number.

2102012001 is a deficient number, since it is larger than the sum of its proper divisors (935535811).

2102012001 is a wasteful number, since it uses less digits than its factorization.

2102012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100640 (or 100637 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2102012001 is about 45847.7044245402. The cubic root of 2102012001 is about 1280.9880069153.

Adding to 2102012001 its reverse (1002102012), we get a palindrome (3104114013).

The spelling of 2102012001 in words is "two billion, one hundred two million, twelve thousand, one".