1212011220212 has 24 divisors (see below), whose sum is σ = 2284990752072. Its totient is φ = 559190016000.

The previous prime is 1212011220209. The next prime is 1212011220227. The reversal of 1212011220212 is 2120221102121.

It can be written as a sum of positive squares in 4 ways, for example, as 202476600676 + 1009534619536 = 449974^2 + 1004756^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4014989 + ... + 4306292.

It is an arithmetic number, because the mean of its divisors is an integer number (95207948003).

Almost surely, 2^{1212011220212} is an apocalyptic number.

It is an amenable number.

1212011220212 is a deficient number, since it is larger than the sum of its proper divisors (1072979531860).

1212011220212 is a wasteful number, since it uses less digits than its factorization.

1212011220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8324099 (or 8324097 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1212011220212 its reverse (2120221102121), we get a palindrome (3332232322333).

The spelling of 1212011220212 in words is "one trillion, two hundred twelve billion, eleven million, two hundred twenty thousand, two hundred twelve".