2121011201 has 2 divisors, whose sum is σ = 2121011202. Its totient is φ = 2121011200.

The previous prime is 2121011183. The next prime is 2121011281. The reversal of 2121011201 is 1021101212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1663008400 + 458002801 = 40780^2 + 21401^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121011201 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121011281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060505600 + 1060505601.

It is an arithmetic number, because the mean of its divisors is an integer number (1060505601).

Almost surely, 2^2121011201 is an apocalyptic number.

It is an amenable number.

2121011201 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121011201 is an equidigital number, since it uses as much as digits as its factorization.

2121011201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2121011201 is about 46054.4373649272. The cubic root of 2121011201 is about 1284.8358738029.

Adding to 2121011201 its reverse (1021101212), we get a palindrome (3142112413).

It can be divided in two parts, 2121011 and 201, that added together give a palindrome (2121212).

The spelling of 2121011201 in words is "two billion, one hundred twenty-one million, eleven thousand, two hundred one".