122312305345420 has 24 divisors (see below), whose sum is σ = 261702177854544. Its totient is φ = 48001810399296.

The previous prime is 122312305345393. The next prime is 122312305345423. The reversal of 122312305345420 is 24543503213221.

It is a super-2 number, since 2×122312305345420² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122312305345420.

It is not an unprimeable number, because it can be changed into a prime (122312305345423) 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, 57694482594 + ... + 57694484713.

It is an arithmetic number, because the mean of its divisors is an integer number (10904257410606).

Almost surely, 2^{122312305345420} is an apocalyptic number.

122312305345420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122312305345420 is an abundant number, since it is smaller than the sum of its proper divisors (139389872509124).

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

122312305345420 is a wasteful number, since it uses less digits than its factorization.

122312305345420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115388967369 (or 115388967367 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 122312305345420 its reverse (24543503213221), we get a palindrome (146855808558641).

The spelling of 122312305345420 in words is "one hundred twenty-two trillion, three hundred twelve billion, three hundred five million, three hundred forty-five thousand, four hundred twenty".