2011121022122 has 4 divisors (see below), whose sum is σ = 3016681533186. Its totient is φ = 1005560511060.

The previous prime is 2011121022121. The next prime is 2011121022137. The reversal of 2011121022122 is 2212201211102.

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., 1219304016841 + 791817005281 = 1104221^2 + 889841^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2011121022122.

It is not an unprimeable number, because it can be changed into a prime (2011121022121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502780255529 + ... + 502780255532.

Almost surely, 2^{2011121022122} is an apocalyptic number.

2011121022122 is a deficient number, since it is larger than the sum of its proper divisors (1005560511064).

2011121022122 is a wasteful number, since it uses less digits than its factorization.

2011121022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005560511063.

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

Adding to 2011121022122 its reverse (2212201211102), we get a palindrome (4223322233224).

The spelling of 2011121022122 in words is "two trillion, eleven billion, one hundred twenty-one million, twenty-two thousand, one hundred twenty-two".