1211211010122 has 64 divisors (see below), whose sum is σ = 2494159115904. Its totient is φ = 391836856320.

The previous prime is 1211211009977. The next prime is 1211211010133. The reversal of 1211211010122 is 2210101121121.

It is a happy number.

It is a super-2 number, since 2×1211211010122² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 252701758 + ... + 252706550.

It is an arithmetic number, because the mean of its divisors is an integer number (38971236186).

Almost surely, 2^{1211211010122} is an apocalyptic number.

1211211010122 is an abundant number, since it is smaller than the sum of its proper divisors (1282948105782).

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

1211211010122 is a wasteful number, since it uses less digits than its factorization.

1211211010122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7463.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1211211010122 its reverse (2210101121121), we get a palindrome (3421312131243).

The spelling of 1211211010122 in words is "one trillion, two hundred eleven billion, two hundred eleven million, ten thousand, one hundred twenty-two".