2111121201 has 16 divisors (see below), whose sum is σ = 3295410048. Its totient is φ = 1176931200.

The previous prime is 2111121197. The next prime is 2111121209. The reversal of 2111121201 is 1021211112.

It is not a de Polignac number, because 2111121201 - 2² = 2111121197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2111121209) 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, 1225110 + ... + 1226831.

It is an arithmetic number, because the mean of its divisors is an integer number (205963128).

Almost surely, 2^2111121201 is an apocalyptic number.

2111121201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2111121201 is a deficient number, since it is larger than the sum of its proper divisors (1184288847).

2111121201 is a wasteful number, since it uses less digits than its factorization.

2111121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451992.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 2111121201 is about 45946.9389731242. The cubic root of 2111121201 is about 1282.8357541565.

Adding to 2111121201 its reverse (1021211112), we get a palindrome (3132332313).

The spelling of 2111121201 in words is "two billion, one hundred eleven million, one hundred twenty-one thousand, two hundred one".