1213022200122 has 24 divisors (see below), whose sum is σ = 2782815636276. Its totient is φ = 380555984256.

The previous prime is 1213022200097. The next prime is 1213022200123. The reversal of 1213022200122 is 2210022203121.

1213022200122 is a `hidden beast` number, since 1 + 21 + 302 + 220 + 0 + 122 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1191304577961 + 21717622161 = 1091469^2 + 147369^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1213022200095 and 1213022200104.

It is not an unprimeable number, because it can be changed into a prime (1213022200123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1982062113 + ... + 1982062724.

Almost surely, 2^{1213022200122} is an apocalyptic number.

1213022200122 is an abundant number, since it is smaller than the sum of its proper divisors (1569793436154).

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

1213022200122 is a wasteful number, since it uses less digits than its factorization.

1213022200122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3964124862 (or 3964124859 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1213022200122 its reverse (2210022203121), we get a palindrome (3423044403243).

The spelling of 1213022200122 in words is "one trillion, two hundred thirteen billion, twenty-two million, two hundred thousand, one hundred twenty-two".