1211102140122 has 48 divisors (see below), whose sum is σ = 2999477961792. Its totient is φ = 345964754880.

The previous prime is 1211102140109. The next prime is 1211102140139. The reversal of 1211102140122 is 2210412011121.

1211102140122 is a `hidden beast` number, since 1 + 211 + 10 + 21 + 401 + 22 = 666.

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 = 1211102140095 and 1211102140104.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 213379 + ... + 1570902.

It is an arithmetic number, because the mean of its divisors is an integer number (62489124204).

Almost surely, 2^{1211102140122} is an apocalyptic number.

1211102140122 is an abundant number, since it is smaller than the sum of its proper divisors (1788375821670).

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

1211102140122 is a wasteful number, since it uses less digits than its factorization.

1211102140122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1789683 (or 1789680 counting only the distinct ones).

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

Adding to 1211102140122 its reverse (2210412011121), we get a palindrome (3421514151243).

The spelling of 1211102140122 in words is "one trillion, two hundred eleven billion, one hundred two million, one hundred forty thousand, one hundred twenty-two".