2101201122122 has 4 divisors (see below), whose sum is σ = 3151801683186. Its totient is φ = 1050600561060.

The previous prime is 2101201122113. The next prime is 2101201122169. The reversal of 2101201122122 is 2212211021012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1343603221321 + 757597900801 = 1159139^2 + 870401^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2101201122122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525300280529 + ... + 525300280532.

Almost surely, 2^{2101201122122} is an apocalyptic number.

2101201122122 is a deficient number, since it is larger than the sum of its proper divisors (1050600561064).

2101201122122 is a wasteful number, since it uses less digits than its factorization.

2101201122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050600561063.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2101201122122 its reverse (2212211021012), we get a palindrome (4313412143134).

The spelling of 2101201122122 in words is "two trillion, one hundred one billion, two hundred one million, one hundred twenty-two thousand, one hundred twenty-two".