312020222311220 has 24 divisors (see below), whose sum is σ = 655243168724424. Its totient is φ = 124807955234816.

The previous prime is 312020222311081. The next prime is 312020222311229. The reversal of 312020222311220 is 22113222020213.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 46621065073444 + 265399157237776 = 6827962^2 + 16291076^2 .

It is a super-2 number, since 2×312020222311220² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312020222311229) 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, 11990912 + ... + 27709608.

It is an arithmetic number, because the mean of its divisors is an integer number (27301798696851).

Almost surely, 2^{312020222311220} is an apocalyptic number.

It is an amenable number.

312020222311220 is an abundant number, since it is smaller than the sum of its proper divisors (343222946413204).

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

312020222311220 is a wasteful number, since it uses less digits than its factorization.

312020222311220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16711219 (or 16711217 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 312020222311220 its reverse (22113222020213), we get a palindrome (334133444331433).

The spelling of 312020222311220 in words is "three hundred twelve trillion, twenty billion, two hundred twenty-two million, three hundred eleven thousand, two hundred twenty".