3711221020 has 48 divisors (see below), whose sum is σ = 8406306720. Its totient is φ = 1368135936.

The previous prime is 3711220987. The next prime is 3711221021. The reversal of 3711221020 is 201221173.

It is a super-2 number, since 2×3711221020² = 27546322918579680800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3711221021) 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, 158851 + ... + 180709.

It is an arithmetic number, because the mean of its divisors is an integer number (175131390).

Almost surely, 2^3711221020 is an apocalyptic number.

It is an amenable number.

3711221020 is an abundant number, since it is smaller than the sum of its proper divisors (4695085700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3711221020 is a wasteful number, since it uses less digits than its factorization.

3711221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22534 (or 22532 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 3711221020 is about 60919.7916936688. The cubic root of 3711221020 is about 1548.2423392095.

Adding to 3711221020 its reverse (201221173), we get a palindrome (3912442193).

The spelling of 3711221020 in words is "three billion, seven hundred eleven million, two hundred twenty-one thousand, twenty".