1211101220122 has 32 divisors (see below), whose sum is σ = 1871758272384. Its totient is φ = 587385691200.

The previous prime is 1211101220107. The next prime is 1211101220123. The reversal of 1211101220122 is 2210221011121.

It is a junction number, because it is equal to n+sod(n) for n = 1211101220096 and 1211101220105.

It is not an unprimeable number, because it can be changed into a prime (1211101220123) 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 15 ways as a sum of consecutive naturals, for example, 11262972 + ... + 11369992.

It is an arithmetic number, because the mean of its divisors is an integer number (58492446012).

Almost surely, 2^{1211101220122} is an apocalyptic number.

1211101220122 is a deficient number, since it is larger than the sum of its proper divisors (660657052262).

1211101220122 is a wasteful number, since it uses less digits than its factorization.

1211101220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107974.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1211101220122 its reverse (2210221011121), we get a palindrome (3421322231243).

The spelling of 1211101220122 in words is "one trillion, two hundred eleven billion, one hundred one million, two hundred twenty thousand, one hundred twenty-two".