1212211020122 has 16 divisors (see below), whose sum is σ = 1881868465512. Its totient is φ = 585226337280.

The previous prime is 1212211020121. The next prime is 1212211020127. The reversal of 1212211020122 is 2210201122121.

It can be written as a sum of positive squares in 4 ways, for example, as 682010053921 + 530200966201 = 825839^2 + 728149^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1212211020122.

It is not an unprimeable number, because it can be changed into a prime (1212211020121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76193393 + ... + 76209300.

Almost surely, 2^{1212211020122} is an apocalyptic number.

1212211020122 is a deficient number, since it is larger than the sum of its proper divisors (669657445390).

1212211020122 is a wasteful number, since it uses less digits than its factorization.

1212211020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152402833.

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

Adding to 1212211020122 its reverse (2210201122121), we get a palindrome (3422412142243).

The spelling of 1212211020122 in words is "one trillion, two hundred twelve billion, two hundred eleven million, twenty thousand, one hundred twenty-two".