2122121201 has 16 divisors (see below), whose sum is σ = 2189980800. Its totient is φ = 2055648000.

The previous prime is 2122121189. The next prime is 2122121227. The reversal of 2122121201 is 1021212212.

It is a cyclic number.

It is not a de Polignac number, because 2122121201 - 2²² = 2117926897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2122121291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 995705 + ... + 997833.

It is an arithmetic number, because the mean of its divisors is an integer number (136873800).

Almost surely, 2^2122121201 is an apocalyptic number.

It is an amenable number.

2122121201 is a deficient number, since it is larger than the sum of its proper divisors (67859599).

2122121201 is a wasteful number, since it uses less digits than its factorization.

2122121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2122121201 is about 46066.4867447041. The cubic root of 2122121201 is about 1285.0599680311.

Adding to 2122121201 its reverse (1021212212), we get a palindrome (3143333413).

The spelling of 2122121201 in words is "two billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred one".