511212340122 has 32 divisors (see below), whose sum is σ = 1174076190720. Its totient is φ = 146759523120.

The previous prime is 511212340099. The next prime is 511212340123. The reversal of 511212340122 is 221043212115.

It is a happy number.

It is a super-2 number, since 2×511212340122² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 511212340092 and 511212340101.

It is not an unprimeable number, because it can be changed into a prime (511212340123) 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, 203831418 + ... + 203833925.

It is an arithmetic number, because the mean of its divisors is an integer number (36689880960).

Almost surely, 2^511212340122 is an apocalyptic number.

511212340122 is an abundant number, since it is smaller than the sum of its proper divisors (662863850598).

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

511212340122 is a wasteful number, since it uses less digits than its factorization.

511212340122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407665378.

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 511212340122 its reverse (221043212115), we get a palindrome (732255552237).

The spelling of 511212340122 in words is "five hundred eleven billion, two hundred twelve million, three hundred forty thousand, one hundred twenty-two".