201212130420 has 144 divisors (see below), whose sum is σ = 704726899968. Its totient is φ = 45517178880.

The previous prime is 201212130409. The next prime is 201212130433. The reversal of 201212130420 is 24031212102.

It is a happy number.

201212130420 is a `hidden beast` number, since 2 + 0 + 1 + 212 + 1 + 30 + 420 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 201212130393 and 201212130402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 700936 + ... + 945375.

Almost surely, 2^201212130420 is an apocalyptic number.

201212130420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201212130420 is an abundant number, since it is smaller than the sum of its proper divisors (503514769548).

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

201212130420 is a wasteful number, since it uses less digits than its factorization.

201212130420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646430 (or 1646425 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 201212130420 its reverse (24031212102), we get a palindrome (225243342522).

The spelling of 201212130420 in words is "two hundred one billion, two hundred twelve million, one hundred thirty thousand, four hundred twenty".