1220000124212 has 6 divisors (see below), whose sum is σ = 2135000217378. Its totient is φ = 610000062104.

The previous prime is 1220000124199. The next prime is 1220000124223. The reversal of 1220000124212 is 2124210000221.

It can be written as a sum of positive squares in only one way, i.e., 1049469118096 + 170531006116 = 1024436^2 + 412954^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152500015523 + ... + 152500015530.

It is an arithmetic number, because the mean of its divisors is an integer number (355833369563).

Almost surely, 2^{1220000124212} is an apocalyptic number.

It is an amenable number.

1220000124212 is a deficient number, since it is larger than the sum of its proper divisors (915000093166).

1220000124212 is a wasteful number, since it uses less digits than its factorization.

1220000124212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305000031057 (or 305000031055 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1220000124212 its reverse (2124210000221), we get a palindrome (3344210124433).

The spelling of 1220000124212 in words is "one trillion, two hundred twenty billion, one hundred twenty-four thousand, two hundred twelve".