1212020111104 has 36 divisors (see below), whose sum is σ = 2639242662840. Its totient is φ = 550918231040.

The previous prime is 1212020111069. The next prime is 1212020111119. The reversal of 1212020111104 is 4011110202121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215199619 + ... + 215205250.

It is an arithmetic number, because the mean of its divisors is an integer number (73312296190).

Almost surely, 2^{1212020111104} is an apocalyptic number.

It is an amenable number.

1212020111104 is an abundant number, since it is smaller than the sum of its proper divisors (1427222551736).

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

1212020111104 is an equidigital number, since it uses as much as digits as its factorization.

1212020111104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430404896 (or 430404882 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1212020111104 its reverse (4011110202121), we get a palindrome (5223130313225).

The spelling of 1212020111104 in words is "one trillion, two hundred twelve billion, twenty million, one hundred eleven thousand, one hundred four".