1211213002122 has 48 divisors (see below), whose sum is σ = 2626967004480. Its totient is φ = 403326798336.

The previous prime is 1211213002121. The next prime is 1211213002123. The reversal of 1211213002122 is 2212003121121.

1211213002122 is a `hidden beast` number, since 121 + 121 + 300 + 2 + 122 = 666.

It is an interprime number because it is at equal distance from previous prime (1211213002121) and next prime (1211213002123).

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 = 1211213002095 and 1211213002104.

It is not an unprimeable number, because it can be changed into a prime (1211213002121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79369329 + ... + 79384587.

It is an arithmetic number, because the mean of its divisors is an integer number (54728479260).

Almost surely, 2^{1211213002122} is an apocalyptic number.

1211213002122 is an abundant number, since it is smaller than the sum of its proper divisors (1415754002358).

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

1211213002122 is a wasteful number, since it uses less digits than its factorization.

1211213002122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19467 (or 19464 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1211213002122 its reverse (2212003121121), we get a palindrome (3423216123243).

The spelling of 1211213002122 in words is "one trillion, two hundred eleven billion, two hundred thirteen million, two thousand, one hundred twenty-two".