1201212131322 has 16 divisors (see below), whose sum is σ = 2745627728832. Its totient is φ = 343203466080.

The previous prime is 1201212131321. The next prime is 1201212131359. The reversal of 1201212131322 is 2231312121021.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1201212131321) 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, 14300144379 + ... + 14300144462.

It is an arithmetic number, because the mean of its divisors is an integer number (171601733052).

Almost surely, 2^{1201212131322} is an apocalyptic number.

1201212131322 is an abundant number, since it is smaller than the sum of its proper divisors (1544415597510).

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

1201212131322 is a wasteful number, since it uses less digits than its factorization.

1201212131322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28600288853.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1201212131322 its reverse (2231312121021), we get a palindrome (3432524252343).

The spelling of 1201212131322 in words is "one trillion, two hundred one billion, two hundred twelve million, one hundred thirty-one thousand, three hundred twenty-two".