1211211110122 has 32 divisors (see below), whose sum is σ = 2045699566848. Its totient is φ = 533652087936.

The previous prime is 1211211110119. The next prime is 1211211110167. The reversal of 1211211110122 is 2210111121121.

It is a super-2 number, since 2×1211211110122² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1211211110096 and 1211211110105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1712563 + ... + 2314150.

It is an arithmetic number, because the mean of its divisors is an integer number (63928111464).

Almost surely, 2^{1211211110122} is an apocalyptic number.

1211211110122 is a deficient number, since it is larger than the sum of its proper divisors (834488456726).

1211211110122 is a wasteful number, since it uses less digits than its factorization.

1211211110122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4027254.

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

Adding to 1211211110122 its reverse (2210111121121), we get a palindrome (3421322231243).

The spelling of 1211211110122 in words is "one trillion, two hundred eleven billion, two hundred eleven million, one hundred ten thousand, one hundred twenty-two".