1210211212122 has 96 divisors (see below), whose sum is σ = 3029560095744. Its totient is φ = 358927815600.

The previous prime is 1210211212073. The next prime is 1210211212141. The reversal of 1210211212122 is 2212121120121.

1210211212122 is a `hidden beast` number, since 121 + 0 + 211 + 212 + 122 = 666.

It is a super-2 number, since 2×1210211212122² (a number of 25 digits) contains 22 as substring.

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 = 1210211212095 and 1210211212104.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2157004 + ... + 2659527.

It is an arithmetic number, because the mean of its divisors is an integer number (31557917664).

Almost surely, 2^{1210211212122} is an apocalyptic number.

1210211212122 is an abundant number, since it is smaller than the sum of its proper divisors (1819348883622).

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

1210211212122 is a wasteful number, since it uses less digits than its factorization.

1210211212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4816606 (or 4816594 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1210211212122 its reverse (2212121120121), we get a palindrome (3422332332243).

The spelling of 1210211212122 in words is "one trillion, two hundred ten billion, two hundred eleven million, two hundred twelve thousand, one hundred twenty-two".