4021011123 has 4 divisors (see below), whose sum is σ = 5361348168. Its totient is φ = 2680674080.

The previous prime is 4021011119. The next prime is 4021011143. The reversal of 4021011123 is 3211101204.

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

It is a cyclic number.

It is not a de Polignac number, because 4021011123 - 2² = 4021011119 is a prime.

It is a super-2 number, since 2×4021011123² = 32337060902579442258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4021011103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 670168518 + ... + 670168523.

It is an arithmetic number, because the mean of its divisors is an integer number (1340337042).

Almost surely, 2^4021011123 is an apocalyptic number.

4021011123 is a deficient number, since it is larger than the sum of its proper divisors (1340337045).

4021011123 is a wasteful number, since it uses less digits than its factorization.

4021011123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340337044.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 4021011123 is about 63411.4431550016. The cubic root of 4021011123 is about 1590.1756227828.

Adding to 4021011123 its reverse (3211101204), we get a palindrome (7232112327).

The spelling of 4021011123 in words is "four billion, twenty-one million, eleven thousand, one hundred twenty-three".