2111151401 has 4 divisors (see below), whose sum is σ = 2111349204. Its totient is φ = 2110953600.

The previous prime is 2111151391. The next prime is 2111151403. The reversal of 2111151401 is 1041511112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 229674025 + 1881477376 = 15155^2 + 43376^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111151401 - 2²⁶ = 2044042537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2111151401.

It is not an unprimeable number, because it can be changed into a prime (2111151403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81920 + ... + 104561.

It is an arithmetic number, because the mean of its divisors is an integer number (527837301).

Almost surely, 2^2111151401 is an apocalyptic number.

It is an amenable number.

2111151401 is a deficient number, since it is larger than the sum of its proper divisors (197803).

2111151401 is a wasteful number, since it uses less digits than its factorization.

2111151401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197802.

The product of its (nonzero) digits is 40, while the sum is 17.

The square root of 2111151401 is about 45947.2676119048. The cubic root of 2111151401 is about 1282.8418711991.

Adding to 2111151401 its reverse (1041511112), we get a palindrome (3152662513).

The spelling of 2111151401 in words is "two billion, one hundred eleven million, one hundred fifty-one thousand, four hundred one".