1212011022205 has 16 divisors (see below), whose sum is σ = 1468084881024. Its totient is φ = 960495357760.

The previous prime is 1212011022191. The next prime is 1212011022239. The reversal of 1212011022205 is 5022201102121.

It is a happy number.

It is not a de Polignac number, because 1212011022205 - 2¹³ = 1212011014013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12186459 + ... + 12285511.

It is an arithmetic number, because the mean of its divisors is an integer number (91755305064).

Almost surely, 2^{1212011022205} is an apocalyptic number.

It is an amenable number.

1212011022205 is a deficient number, since it is larger than the sum of its proper divisors (256073858819).

1212011022205 is a wasteful number, since it uses less digits than its factorization.

1212011022205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122036.

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 1212011022205 its reverse (5022201102121), we get a palindrome (6234212124326).

The spelling of 1212011022205 in words is "one trillion, two hundred twelve billion, eleven million, twenty-two thousand, two hundred five".