2142105511 has 24 divisors (see below), whose sum is σ = 2740651200. Its totient is φ = 1658768832.

The previous prime is 2142105481. The next prime is 2142105517. The reversal of 2142105511 is 1155012412.

It is not a de Polignac number, because 2142105511 - 2¹³ = 2142097319 is a prime.

It is a super-2 number, since 2×2142105511² = 9177232040513142242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142105517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5836 + ... + 65713.

It is an arithmetic number, because the mean of its divisors is an integer number (114193800).

Almost surely, 2^2142105511 is an apocalyptic number.

2142105511 is a deficient number, since it is larger than the sum of its proper divisors (598545689).

2142105511 is a wasteful number, since it uses less digits than its factorization.

2142105511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71623 (or 71616 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 2142105511 is about 46282.8857246391. The cubic root of 2142105511 is about 1289.0812340984.

Adding to 2142105511 its reverse (1155012412), we get a palindrome (3297117923).

The spelling of 2142105511 in words is "two billion, one hundred forty-two million, one hundred five thousand, five hundred eleven".