4021261011 has 8 divisors (see below), whose sum is σ = 5957423760. Its totient is φ = 2680840656.

The previous prime is 4021260989. The next prime is 4021261117. The reversal of 4021261011 is 1101621204.

4021261011 is a `hidden beast` number, since 40 + 2 + 1 + 2 + 610 + 11 = 666.

It is not a de Polignac number, because 4021261011 - 2⁵ = 4021260979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4021261711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74467770 + ... + 74467823.

It is an arithmetic number, because the mean of its divisors is an integer number (744677970).

Almost surely, 2^4021261011 is an apocalyptic number.

4021261011 is a deficient number, since it is larger than the sum of its proper divisors (1936162749).

4021261011 is a wasteful number, since it uses less digits than its factorization.

4021261011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148935602 (or 148935596 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 4021261011 is about 63413.4134943073. The cubic root of 4021261011 is about 1590.2085628869.

Adding to 4021261011 its reverse (1101621204), we get a palindrome (5122882215).

The spelling of 4021261011 in words is "four billion, twenty-one million, two hundred sixty-one thousand, eleven".