2011212001 has 4 divisors (see below), whose sum is σ = 2045300400. Its totient is φ = 1977123604.

The previous prime is 2011211999. The next prime is 2011212053. The reversal of 2011212001 is 1002121102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1002121102 = 2 ⋅501060551.

It is a cyclic number.

It is not a de Polignac number, because 2011212001 - 2¹ = 2011211999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011212061) 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, 17044111 + ... + 17044228.

It is an arithmetic number, because the mean of its divisors is an integer number (511325100).

Almost surely, 2^2011212001 is an apocalyptic number.

It is an amenable number.

2011212001 is a deficient number, since it is larger than the sum of its proper divisors (34088399).

2011212001 is an equidigital number, since it uses as much as digits as its factorization.

2011212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34088398.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 2011212001 is about 44846.5383390959. The cubic root of 2011212001 is about 1262.2710366864.

Adding to 2011212001 its reverse (1002121102), we get a palindrome (3013333103).

The spelling of 2011212001 in words is "two billion, eleven million, two hundred twelve thousand, one".